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42 42

Structure Function Results from ZEUS

Sep 18, 2013 09/13

by A. Kappes

eye 42

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This contribution presents recent ZEUS results on proton structure functions at HERA. The inclusive phi(1020)-meson cross section was measured, and it was used to determine the s-quark content of the proton. The structure function F_2 was extracted using initial-state radiative events. Neutral and charged current cross sections were used to extract the structure function xF_3 and measure the mass of the W boson, respectively. A NLO QCD fit to ZEUS data and fixed target cross sections was...
Source: http://arxiv.org/abs/hep-ex/0210032v1

Arxiv.org

61 61

High-energy neutrinos from Galactic sources

Sep 22, 2013 09/13

by A. Kappes

eye 61

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Even 100 years after the discovery of cosmic rays their origin remains a mystery. In recent years, TeV gamma-ray detectors have discovered and investigated many Galactic sources where particles are accelerated up to energies of 100 TeV. However, it has not been possible up to now to identify these sites unambiguously as sources of hadronic acceleration. The observation of cosmic high-energy neutrinos from these or other sources will be a smoking-gun evidence for the sites of the acceleration of...
Source: http://arxiv.org/abs/1004.4341v1

Arxiv.org

32 32

Study of Deep Inelastic ep-Scattering at High-Q^2 with ZEUS at HERA

Sep 18, 2013 09/13

by A. Kappes

eye 32

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Measurements of differential cross sections for deep inelastic ep neutral-current (NC) and charged-current (CC) reactions are presented using data taken during the 1994-97 e^+p and the 1998-99 e^-p running periods. The structure function xF_3 has been extracted combining NC e^-p and e^+p data sets. Both the measured cross sections and xF_3 are well described by the standard model predictions using standard PDF's.
Source: http://arxiv.org/abs/hep-ex/0006024v1

Arxiv.org

81 81

KM3NeT: A Next Generation Neutrino Telescope in the Mediterranean Sea

Sep 17, 2013 09/13

by A. Kappes; for the KM3NeT Consortium

eye 81

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To complement the IceCube neutrino telescope currently under construction at the South Pole, the three Mediterranean neutrino telescope projects ANTARES, NEMO and NESTOR have joined forces to develop, construct and operate a km^3-scale neutrino telescope in the Mediterranean Sea. Since February 2006, the technical specifications and performance of such a detector are studied in the framework of a 3-year EU-funded Design Study. In 2009 a technical design report will be released laying the...
Source: http://arxiv.org/abs/0711.0563v1

Arxiv.org

81 81

IceCube: Neutrino Messages from GRBs

Jul 20, 2013 07/13

by A. Kappes for the IceCube Collaboration

eye 81

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The mystery of where and how Nature accelerates the cosmic rays is still unresolved a century after their discovery. Gamma ray bursts (GRBs) have been proposed as one of the more plausible sources of extragalactic cosmic rays. A positive observation of neutrinos in coincidence with a GRB would identify these objects as sources of the highest-energy cosmic rays and provide invaluable information about the processes occurring inside these phenomena. Calculations show that a kilometer-scale...
Source: http://arxiv.org/abs/1007.4629v1

Arxiv.org

5 5.0

Searching for tau neutrinos with Cherenkov telescopes

Jun 30, 2018 06/18

by D. Gora; E. Bernardini; A. Kappes

eye 5

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Cherenkov telescopes have the capability of detecting high energy tau neutrinos in the energy range of 1--1000 PeV by searching for very inclined showers. If a tau lepton, produced by a tau neutrino, escapes from the Earth or a mountain, it will decay and initiate a shower in the air which can be detected by an air shower fluorescence or Cherenkov telescope. In this paper, we present detailed Monte Carlo simulations of corresponding event rates for the VERITAS and two proposed Cherenkov...
Topics: Instrumentation and Methods for Astrophysics, High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1402.4243

Arxiv.org

20 20

Exploring the Universe with Very High Energy Neutrinos

Jun 26, 2018 06/18

by A. Kappes; for the IceCube Collaboration

eye 20

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With the discovery of a high-energy neutrino flux in the 0.1 PeV to PeV range from beyond the Earth's atmosphere with the IceCube detector, neutrino astronomy has achieved a major breakthrough in the exploration of the high-energy universe. One of the main goals is the identification and investigation of the still mysterious sources of the cosmic rays which are observed at Earth with energies up to several $10^5$ PeV. In addition to being smoking-gun evidence for the presence of cosmic rays in...
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1501.07798

Arxiv.org

35 35

Thermo-acoustic Sound Generation in the Interaction of Pulsed Proton and Laser Beams with a Water Target

Jun 25, 2018 06/18

by R. Lahmann; G. Anton; K. Graf; J. Hößl; A. Kappes; U. Katz; K. Mecke; S. Schwemmer

eye 35

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The generation of hydrodynamic radiation in interactions of pulsed proton and laser beams with matter is explored. The beams were directed into a water target and the resulting acoustic signals were recorded with pressure sensitive sensors. Measurements were performed with varying pulse energies, sensor positions, beam diameters and temperatures. The obtained data are matched by simulation results based on the thermo-acoustic model with uncertainties at a level of 10%. The results imply that...
Topics: Instrumentation and Detectors, Astrophysics, Fluid Dynamics, Instrumentation and Methods for...
Source: http://arxiv.org/abs/1501.01494

Arxiv.org

53 53

Integration of Acoustic Neutrino Detection Methods into ANTARES

Sep 19, 2013 09/13

by K Graf; G Anton; J Hoessl; A Kappes; U F Katz; R Lahmann; C Naumann; K Salomon

eye 53

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The ANTARES Neutrino Telescope is a water Cherenkov detector currently under construction in the Mediterranean Sea. It is also designed to serve as a platform for investigations of the deep-sea environment. In this context, the ANTARES group at the University of Erlangen will integrate acoustic sensors within the infrastructure of the experiment. With this dedicated setup, tests of acoustic particle detection methods and deep-sea acoustic background studies shall be performed. The aim of this...
Source: http://arxiv.org/abs/astro-ph/0703442v1

Arxiv.org

49 49

Towards Acoustic Detection of UHE Neutrinos in the Mediterranean Sea - The AMADEUS Project in ANTARES

Sep 19, 2013 09/13

by K Graf; G Anton; J Hoessl; A Kappes; U F Katz; R Lahmann; C Naumann; K Salomon

eye 49

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The acoustic detection method is a promising option for future neutrino telescopes operating in the ultra-high energy regime. It utilises the effect that a cascade evolving from a neutrino interaction generates a sound wave, and is applicable in different target materials like water, ice and salt. Described here are the developments in and the plans for the research on acoustic particle detection in water performed by the ANTARES group at the University of Erlangen within the framework of the...
Source: http://arxiv.org/abs/astro-ph/0703444v1

Arxiv.org

49 49

Integration of Acoustic Detection Equipment into ANTARES

Sep 23, 2013 09/13

by R. Lahmann; G. Anton; K. Graf; J. Hoessl; A. Kappes; T. Karg; U. Katz; C. Naumann; K. Salomon

eye 49

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The ANTARES group at the University of Erlangen is working towards the integration of a set of acoustic sensors into the ANTARES Neutrino Telescope. With this setup, tests of acoustic particle detection methods and background studies shall be performed. The ANTARES Neutrino Telescope, which is currently being constructed in the Mediterranean Sea, will be equipped with the infrastructure to accommodate a 3-dimensional array of photomultipliers for the detection of Cherenkov light. Within this...
Source: http://arxiv.org/abs/astro-ph/0511834v1

Arxiv.org

68 68

Measurements and Simulation Studies of Piezoceramics for Acoustic Particle Detection

Sep 18, 2013 09/13

by K. Salomon; G. Anton; K. Graf; J. Hoessl; A. Kappes; T. Karg; U. Katz; R. Lahmann; C. Naumann

eye 68

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Calibration sources are an indispensable tool for all detectors. In acoustic particle detection the goal of a calibration source is to mimic neutrino signatures as expected from hadronic cascades. A simple and promising method for the emulation of neutrino signals are piezo ceramics. We will present results of measruements and simulations on these piezo ceramics.
Source: http://arxiv.org/abs/astro-ph/0509453v1

Arxiv.org

43 43

Reconstruction methods for acoustic particle detection in the deep sea using clusters of hydrophones

Sep 22, 2013 09/13

by C. Richardt; G. Anton; K. Graf; J. Hoessl; A. Kappes; U. Katz; R. Lahmann; Ch. Naumann; M. Neff; F. Schoeck

eye 43

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This article focuses on techniques for acoustic noise reduction, signal filters and source reconstruction. For noise reduction, bandpass filters and cross correlations are found to be efficient and fast ways to improve the signal to noise ratio and identify a possible neutrino-induced acoustic signal. The reconstruction of the position of an acoustic point source in the sea is performed by using small-volume clusters of hydrophones (about 1 cubic meter) for direction reconstruction by a...
Source: http://arxiv.org/abs/0906.1718v1

Arxiv.org

48 48

Testing Thermo-acoustic Sound Generation in Water with Proton and Laser Beams

Sep 18, 2013 09/13

by K. Graf; G. Anton; J. Hoessl; A. Kappes; T. Karg; U. Katz; R. Lahmann; C. Naumann; K. Salomon; C. Stegmann

eye 48

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Experiments were performed at a proton accelerator and an infrared laser acility to investigate the sound generation caused by the energy deposition of pulsed particle and laser beams in water. The beams with an energy range of 1 PeV to 400 PeV per proton beam spill and up to 10 EeV for the laser pulse were dumped into a water volume and the resulting acoustic signals were recorded with pressure sensitive sensors. Measurements were performed at varying pulse energies, sensor positions, beam...
Source: http://arxiv.org/abs/astro-ph/0509450v1

Arxiv.org

64 64

Beam Test of Silicon Strip Sensors for the ZEUS Micro Vertex Detector

Sep 18, 2013 09/13

by L. A. T. Bauerdick; E. Borsato; C. Burgard; T. Carli; R. Carlin; M. Casaro; V. Chiochia; F. Dal Corso; D. Dannheim; A. Garfagnini; A. Kappes; R. Klanner; E. Koffeman; B. Koppitz; U. Koetz; E. Maddox; M. Milite; M. Moritz; J. S. T. Ng; M. C. Petrucci; I. Redondo; J. Rautenberg; H. Tiecke; M. Turcato; J. J. Velthuis; A. Weber

eye 64

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For the HERA upgrade, the ZEUS experiment has designed and installed a high precision Micro Vertex Detector (MVD) using single sided micro-strip sensors with capacitive charge division. The sensors have a readout pitch of 120 microns, with five intermediate strips (20 micron strip pitch). An extensive test program has been carried out at the DESY-II testbeam facility. In this paper we describe the setup developed to test the ZEUS MVD sensors and the results obtained on both irradiated and...
Source: http://arxiv.org/abs/hep-ex/0212037v1

Arxiv.org

7 7.0

Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event

Jun 29, 2018 06/18

by M. Kadler; F. Krauß; K. Mannheim; R. Ojha; C. Müller; R. Schulz; G. Anton; W. Baumgartner; T. Beuchert; S. Buson; B. Carpenter; T. Eberl; P. G. Edwards; D. Eisenacher Glawion; D. Elsässer; N. Gehrels; C. Gräfe; H. Hase; S. Horiuchi; C. W. James; A. Kappes; U. Katz; A. Kreikenbohm; M. Kreter; I. Kreykenbohm; M. Langejahn; K. Leiter; E. Litzinger; F. Longo; J. E. J. Lovell; J. McEnery; C. Phillips; C. Plötz; J. Quick; E. Ros; F. W. Stecker; T. Steinbring; J. Stevens; D. J. Thompson; J....

eye 7

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The discovery of extraterrestrial very-high-energy neutrinos by the IceCube collaboration has launched a quest for the identification of their astrophysical sources. Gamma-ray blazars have been predicted to yield a cumulative neutrino signal exceeding the atmospheric background above energies of 100 TeV, assuming that both the neutrinos and the gamma-ray photons are produced by accelerated protons in relativistic jets. Since the background spectrum falls steeply with increasing energy, the...
Topics: Astrophysics, High Energy Astrophysical Phenomena, High Energy Physics - Phenomenology
Source: http://arxiv.org/abs/1602.02012

Arxiv.org

6 6.0

TANAMI Blazars in the IceCube PeV Neutrino Fields

Jun 30, 2018 06/18

by F. Krauß; M. Kadler; K. Mannheim; R. Schulz; J Trüstedt; J. Wilms; R. Ojha; E. Ros; G. Anton; W. Baumgartner; T. Beuchert; J. Blanchard; C. Bürkel; B. Carpenter; T. Eberl; P. G. Edwards; D. Eisenacher; D. Elsässer; K. Fehn; U. Fritsch; N. Gehrels; C. Gräfe; C. Großberger; H. Hase; S. Horiuchi; C. James; A. Kappes; U. Katz; A. Kreikenbohm; I. Kreykenbohm; M. Langejahn; K. Leiter; E. Litzinger; J. E. J. Lovell; C. Müller; C. Phillips; C. Plötz; J. Quick; T. Steinbring; J. Stevens; D. J....

eye 6

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The IceCube Collaboration has announced the discovery of a neutrino flux in excess of the atmospheric background. Due to the steeply falling atmospheric background spectrum, events at PeV energies are most likely of extraterrestrial origin. We present the multiwavelength properties of the six radio brightest blazars positionally coincident with these events using contemporaneous data of the TANAMI blazar sample, including high-resolution images and spectral energy distributions. Assuming the...
Topics: High Energy Physics - Phenomenology, High Energy Astrophysical Phenomena, Astrophysics, High Energy...
Source: http://arxiv.org/abs/1406.0645

Arxiv.org

91 91

The design and performance of the ZEUS Micro Vertex detector

Sep 19, 2013 09/13

by A. Polini; I. Brock; S. Goers; A. Kappes; U. F. Katz; E. Hilger; J. Rautenberg; A. Weber; A. Mastroberardino; E. Tassi; V. Adler; L. A. T. Bauerdick; I. Bloch; T. Haas; U. Klein; U. Koetz; G. Kramberger; E. Lobodzinska; R. Mankel; J. Ng; D. Notz; M. C. Petrucci; B. Surrow; G. Watt; C. Youngman; W. Zeuner; C. Coldewey; R. Heller; E. Gallo; T. Carli; V. Chiochia; D. Dannheim; E. Fretwurst; A. Garfagnini; R. Klanner; B. Koppitz; J. Martens; M. Milite; K. Tokushuku; I. Redondo; H. Boterenbrood; E....

eye 91

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In order to extend the tracking acceptance, to improve the primary and secondary vertex reconstruction and thus enhancing the tagging capabilities for short lived particles, the ZEUS experiment at the HERA Collider at DESY installed a silicon strip vertex detector. The barrel part of the detector is a 63 cm long cylinder with silicon sensors arranged around an elliptical beampipe. The forward part consists of four circular shaped disks. In total just over 200k channels are read out using $2.9...
Source: http://arxiv.org/abs/0708.3011v1

Arxiv.org

56 56

Time Calibration of the ANTARES Neutrino Telescope

Sep 23, 2013 09/13

by The ANTARES Collaboration; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J. J. Aubert; R. Auer; B. Baret; S. Basa; M. Bazzotti; V. Bertin; S. Biagi; C. Bigongiari; M. Bou-Cabo; M. C. Bouwhuis; A. M. Brown; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Ph. Charvis; T. Chiarusi; M. Circella; H. Costantini; N. Cottini; P. Coyle; C. Curtil; M. P. Decowski; I....

eye 56

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The ANTARES deep-sea neutrino telescope comprises a three-dimensional array of photomultipliers to detect the Cherenkov light induced by upgoing relativistic charged particles originating from neutrino interactions in the vicinity of the detector. The large scattering length of light in the deep sea facilitates an angular resolution of a few tenths of a degree for neutrino energies exceeding 10 TeV. In order to achieve this optimal performance, the time calibration procedures should ensure a...
Source: http://arxiv.org/abs/1012.2204v1

Arxiv.org

4 4.0

Constraining the neutrino emission of gravitationally lensed Flat-Spectrum Radio Quasars with ANTARES data

Jun 30, 2018 06/18

by S. Adrián-Martínez; A. Albert; M. André; G. Anton; M. Ardid; J. -J. Aubert; B. Baret; J. Barrios-Martì; S. Basa; V. Bertin; S. Biagi; G. Riccobene; R. Richter; K. Roensch; A. Rostovtsev; M. Saldaña; D. F. E. Samtleben; A. Sánchez-Losa; M. Sanguineti; J. Schmid; J. Schnabel; C. Bogazzi; S. Schulte; F. Schüssler; T. Seitz; C. Sieger; A. Spies; M. Spurio; J. J. M. Steijger; Th. Stolarczyk; M. Taiuti; C. Tamburini; R. Bormuth; Y. Tayalati; A. Trovato; M. Tselengidou; C. Tönnis; B. Vallage;...

eye 4

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This paper proposes to exploit gravitational lensing effects to improve the sensitivity of neutrino telescopes to the intrinsic neutrino emission of distant blazar populations. This strategy is illustrated with a search for cosmic neutrinos in the direction of four distant and gravitationally lensed Flat-Spectrum Radio Quasars. The magnification factor is estimated for each system assuming a singular isothermal profile for the lens. Based on data collected from 2007 to 2012 by the ANTARES...
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1407.8525

Arxiv.org

69 69

Search for Relativistic Magnetic Monopoles with the ANTARES Neutrino Telescope

Sep 23, 2013 09/13

by ANTARES Collaboration; S. Adrián-Martínez; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Cârloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; H. Costantini; P. Coyle; C. Curtil; M. P. Decowski; I....

eye 69

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Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric...
Source: http://arxiv.org/abs/1110.2656v2

Arxiv.org

84 84

The ANTARES Telescope Neutrino Alert System

Sep 22, 2013 09/13

by M. Ageron; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Cârloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; P. Coyle; C. Curtil; M. P. Decowski; I. Dekeyser;...

eye 84

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The ANTARES telescope has the capability to detect neutrinos produced in astrophysical transient sources. Potential sources include gamma-ray bursts, core collapse supernovae, and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a new detection method based on coincident observations of neutrinos and optical signals has been developed. A fast online muon track reconstruction is used to trigger a network of small automatic optical telescopes. Such alerts are...
Source: http://arxiv.org/abs/1103.4477v1

Arxiv.org

81 81

AMADEUS - The Acoustic Neutrino Detection Test System of the ANTARES Deep-Sea Neutrino Telescope

Sep 19, 2013 09/13

by ANTARES collaboration; J. A. Aguilar; I. Al Samarai; A. Albert; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J. -J. Aubert; R. Auer; E. Barbarito; B. Baret; S. Basa; M. Bazzotti; V. Bertin; S. Biagi; C. Bigongiari; M. Bou-Cabo; M. C. Bouwhuis; A. Brown; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Cârloganu; G. Carminati; J. Carr; B. Cassano; E. Castorina; V. Cavasinni; S. Cecchini; A. Ceres; Ph. Charvis; T. Chiarusi; N. Chon Sen; M. Circella; R....

eye 81

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The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the...
Source: http://arxiv.org/abs/1009.4179v3

Arxiv.org

128 128

A Fast Algorithm for Muon Track Reconstruction and its Application to the ANTARES Neutrino Telescope

Sep 23, 2013 09/13

by ANTARES collaboration; J. A. Aguilar; I. Al Samarai; A. Albert; M. Andre; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; R. Auer; B. Baret; S. Basa; M. Bazzotti; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; M. C. Bouwhuis; A. M. Brown; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; N. Cottini; P. Coyle; C. Curtil; M....

eye 128

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An algorithm is presented, that provides a fast and robust reconstruction of neutrino induced upward-going muons and a discrimination of these events from downward-going atmospheric muon background in data collected by the ANTARES neutrino telescope. The algorithm consists of a hit merging and hit selection procedure followed by fitting steps for a track hypothesis and a point-like light source. It is particularly well-suited for real time applications such as online monitoring and fast...
Source: http://arxiv.org/abs/1105.4116v1

Arxiv.org

6 6.0

A Search for Time Dependent Neutrino Emission from Microquasars with the ANTARES Telescope

Jun 30, 2018 06/18

by S. Adrián-Martínez; A. Albert; M. André; M. Anghinolfi; G. Anton; M. Ardid; T. Astraatmadja; J. -J. Aubert; B. Baret; J. Barrios; S. Basa; E. Nezri; D. Palioselitis; G. E. Păvălaş; C. Perrina; P. Piattelli; V. Popa; T. Pradier; C. Racca; G. Riccobene; R. Richter; V. Bertin; C. Rivière; A. Robert; K. Roensch; A. Rostovtsev; M. Saldaña; D. F. E. Samtleben; A. Sánchez-Losa; M. Sanguineti; P. Sapienza; J. Schmid; S. Biagi; J. Schnabel; S. Schulte; F. Schüssler; T. Seitz; C. Sieger; A....

eye 6

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Results are presented on a search for neutrino emission from a sample of six microquasars, based on the data collected by the ANTARES neutrino telescope between 2007 and 2010. By means of appropriate time cuts, the neutrino search has been restricted to the periods when the acceleration of relativistic jets was taking place at the microquasars under study. The time cuts have been chosen using the information from the X-ray telescopes RXTE/ASM and Swift/BAT, and, in one case, the gamma-ray...
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1402.1600

Arxiv.org

60 60

Search for a diffuse flux of high-energy $ν_μ$ with the ANTARES neutrino telescope

Sep 21, 2013 09/13

by ANTARES Collaboration; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; R. Auer; B. Baret; S. Basa; M. Bazzotti; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; M. C. Bouwhuis; A. M. Brown; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; N. Cottini; P. Coyle; C. Curtil;...

eye 60

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A search for a diffuse flux of astrophysical muon neutrinos, using data collected by the ANTARES neutrino telescope is presented. A $(0.83\times 2\pi)$ sr sky was monitored for a total of 334 days of equivalent live time. The searched signal corresponds to an excess of events, produced by astrophysical sources, over the expected atmospheric neutrino background. The observed number of events is found compatible with the background expectation. Assuming an $E^{-2}$ flux spectrum, a 90% c.l. upper...
Source: http://arxiv.org/abs/1011.3772v1

Arxiv.org

69 69

A method for detection of muon induced electromagnetic showers with the ANTARES detector

Sep 21, 2013 09/13

by J. A. Aguilar; I. Al. Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J. J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; P. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; P. Coyle; C. Curtil; M. P. Decowski; I. Dekeyser; A....

eye 69

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The primary aim of ANTARES is neutrino astronomy with upward going muons created in charged current muon neutrino interactions in the detector and its surroundings. Downward going muons are background for neutrino searches. These muons are the decay products of cosmic-ray collisions in the Earth's atmosphere far above the detector. This paper presents a method to identify and count electromagnetic showers induced along atmospheric muon tracks with the ANTARES detector. The method is applied to...
Source: http://arxiv.org/abs/1106.0426v2

Arxiv.org

50 50

The Positioning System of the ANTARES Neutrino Telescope

Sep 23, 2013 09/13

by S. Adrián-Martínez; M. Ageron; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J. -J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; P. Coyle; C. Curtil; G. De...

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The ANTARES neutrino telescope, located 40km off the coast of Toulon in the Mediterranean Sea at a mooring depth of about 2475m, consists of twelve detection lines equipped typically with 25 storeys. Every storey carries three optical modules that detect Cherenkov light induced by charged secondary particles (typically muons) coming from neutrino interactions. As these lines are flexible structures fixed to the sea bed and held taut by a buoy, sea currents cause the lines to move and the...
Source: http://arxiv.org/abs/1202.3894v3

Arxiv.org

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ANTARES Constrains a Blazar Origin of Two IceCube PeV Neutrino Events

Jun 26, 2018 06/18

by ANTARES Collaboration; S. Adrián-Martínez; A. Albert; M. André; G. Anton; M. Ardid; J. -J. Aubert; B. Baret; J. Barrios; S. Basa; V. Bertin; D. F. E. Samtleben; A. Sánchez-Losa; M. Sanguineti; P. Sapienza; J. Schmid; J. Schnabel; S. Schulte; F. Schüssler; T. Seitz; C. Sieger; S. Biagi; A. Spies; M. Spurio; J. J. M. Steijger; Th. Stolarczyk; M. Taiuti; C. Tamburini; Y. Tayalati; A. Trovato; M. Tselengidou; C. Tönnis; C. Bogazzi; B. Vallage; C. Vallée; V. Van Elewyck; E. Visser; D. Vivolo;...

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The source(s) of the neutrino excess reported by the IceCube Collaboration is unknown. The TANAMI Collaboration recently reported on the multiwavelength emission of six bright, variable blazars which are positionally coincident with two of the most energetic IceCube events. Objects like these are prime candidates to be the source of the highest-energy cosmic rays, and thus of associated neutrino emission. We present an analysis of neutrino emission from the six blazars using observations with...
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1501.07843

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Contributions to the 32nd International Cosmic Ray Conference (ICRC 2011) by the ANTARES collaboration

Sep 24, 2013 09/13

by S. Adrián-Martínez; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; H. Costantini; P. Coyle; A. Creusto; C. Curtil; G. De Bonis; M. P....

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The ANTARES detector, completed in 2008, is the largest neutrino telescope in the Northern hemisphere. It is located at a depth of 2.5 km in the Mediterranean Sea, 40 km off the Toulon shore. The scientific scope of the experiment is very broad, being the search for astrophysical neutrinos the main goal. In this paper we collect the 22 contributions of the ANTARES collaboration to the 32nd International Cosmic Ray Conference (ICRC 2011). At this stage of the experiment the scientific output is...
Source: http://arxiv.org/abs/1112.0478v1

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Search for Neutrino Emission from Gamma-Ray Flaring Blazars with the ANTARES Telescope

Sep 23, 2013 09/13

by S. Adrián-Martínez; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Cârloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; L. Core; H. Costantini; P. Coyle; A. Creusot; C. Curtil; G. De Bonis; M. P. Decowski; I. Dekeyser; A....

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The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales...
Source: http://arxiv.org/abs/1111.3473v1

Arxiv.org

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Search for Cosmic Neutrino Point Sources with Four Years of Data from the ANTARES Telescope

Sep 20, 2013 09/13

by ANTARES Collaboration; S. Adrián-Martínez; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; T. Astraatmadja; J. -J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; A. Capone; C. Carloganu; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; L. Core; H. Costantini; P. Coyle; A. Creusot; C. Curtil; G. De Bonis; M. P. Decowski; I. Dekeyser;...

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In this paper, a time integrated search for point sources of cosmic neutrinos is presented using the data collected from 2007 to 2010 by the ANTARES neutrino telescope. No statistically significant signal has been found and upper limits on the neutrino flux have been obtained. Assuming an $E_{\nu}^{-2}$ spectrum, these flux limits are at $1-10\times10^{-8}$ GeV cm$^{-2}$ s$^{-1}$ for declinations ranging from $-90^{\circ}$ to 40$^{\circ}$. Limits for specific models of RX J1713.7-3946 and Vela...
Source: http://arxiv.org/abs/1207.3105v2

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First search for neutrinos in correlation with gamma-ray bursts with the ANTARES neutrino telescope

Sep 22, 2013 09/13

by S. Adrián-Martínez; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. Bouwhuis; J. Brunner; J. Busto; A. Capone; C. Carloganu; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; L. Core; H. Costantini; P. Coyle; A. Creusot; C. Curtil; G. De Bonis; M. P. Decowski; I. Dekeyser; A....

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A search for neutrino-induced muons in correlation with a selection of 40 gamma-ray bursts that occurred in 2007 has been performed with the ANTARES neutrino telescope. During that period, the detector consisted of 5 detection lines. The ANTARES neutrino telescope is sensitive to TeV--PeV neutrinos that are predicted from gamma-ray bursts. No events were found in correlation with the prompt photon emission of the gamma-ray bursts and upper limits have been placed on the flux and fluence of...
Source: http://arxiv.org/abs/1302.6750v1

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First Search for Point Sources of High Energy Cosmic Neutrinos with the ANTARES Neutrino Telescope

Sep 21, 2013 09/13

by Antares Collaboration; S. Adrián-Martínez; J. A. Aguilar; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; R. Coniglione; H. Costantini; P. Coyle; C....

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Results are presented of a search for cosmic sources of high energy neutrinos with the ANTARES neutrino telescope. The data were collected during 2007 and 2008 using detector configurations containing between 5 and 12 detection lines. The integrated live time of the analyzed data is 304 days. Muon tracks are reconstructed using a likelihood-based algorithm. Studies of the detector timing indicate a median angular resolution of 0.5 +/- 0.1 degrees. The neutrino flux sensitivity is 7.5 x 10-8 ~...
Source: http://arxiv.org/abs/1108.0292v1

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Measurement of the Group Velocity of Light in Sea Water at the ANTARES Site

Sep 23, 2013 09/13

by S. Adrián-Martínez; I. Al Samarai; A. Albert; M. André; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; A. C. Assis Jesus; T. Astraatmadja; J-J. Aubert; B. Baret; S. Basa; V. Bertin; S. Biagi; A. Bigi; C. Bigongiari; C. Bogazzi; M. Bou-Cabo; B. Bouhou; M. C. Bouwhuis; J. Brunner; J. Busto; F. Camarena; A. Capone; C. Carloganu; G. Carminati; J. Carr; S. Cecchini; Z. Charif; Ph. Charvis; T. Chiarusi; M. Circella; H. Costantini; P. Coyle; C. Curtil; G. De Bonis; M. P. Decowski; I. Dekeyser; A....

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The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements.
Source: http://arxiv.org/abs/1110.5184v2

Arxiv.org

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Multi-year search for dark matter annihilations in the Sun with the AMANDA-II and IceCube detectors

Sep 24, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; D. Altmann; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. Bell; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser; O. Botner;...

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A search for an excess of muon-neutrinos from dark matter annihilations in the Sun has been performed with the AMANDA-II neutrino telescope using data collected in 812 days of livetime between 2001 and 2006 and 149 days of livetime collected with the AMANDA-II and the 40-string configuration of IceCube during 2008 and early 2009. No excess over the expected atmospheric neutrino background has been observed. We combine these results with the previously published IceCube limits obtained with data...
Source: http://arxiv.org/abs/1112.1840v2

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Constraints on the Extremely-high Energy Cosmic Neutrino Flux with the IceCube 2008-2009 Data

Sep 22, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar; M. Ahlers; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser; O. Botner; J. Braun; A. M. Brown; S. Buitink;...

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We report on a search for extremely-high energy neutrinos with energies greater than $10^6$ GeV using the data taken with the IceCube detector at the South Pole. The data was collected between April 2008 and May 2009 with the half completed IceCube array. The absence of signal candidate events in the sample of 333.5 days of livetime significantly improves model independent limit from previous searches and allows to place a limit on the diffuse flux of cosmic neutrinos with an $E^{-2}$ spectrum...
Source: http://arxiv.org/abs/1103.4250v3

Arxiv.org

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Searches for periodic neutrino emission from binary systems with 22 and 40 strings of IceCube

Sep 21, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; M. M. Allen; D. Altmann; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser; O....

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In this paper we present the results of searches for periodic neutrino emission from a catalog of binary systems. Such modulation, observed in the photon flux, would be caused by the geometry of these systems. In the analysis, the period is fixed by these photon observations, while the phase and duration of the neutrino emission are treated as free parameters to be fit with the data. If the emission occurs during ~20% or less of the total period, this analysis achieves better sensitivity than a...
Source: http://arxiv.org/abs/1108.3023v2

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Deep sea tests of a prototype of the KM3NeT digital optical module

Jun 30, 2018 06/18

by S. Adrián-Martínez; M. Ageron; F. Aharonian; S. Aiello; A. Albert; F. Ameli; E. G. Anassontzis; M. Anghinolfi; G. Anton; S. Anvar; M. Ardid; T. Heid; A. Heijboer; E. Heine; S. Henry; J. J. Hernandez-Rey; B. Herold; M. A. Hevinga; M. van der Hoek; J. Hofestadt; J. Hogenbirk; R. de Asmundis; C. Hugon; J. Hosl; M. Imbesi; C. James; P. Jansweijer; J. Jochum; M. de Jong; M. Kadler; O. Kalekin; A. Kappes; K. Balasi; E. Kappos; U. Katz; O. Kavatsyuk; P. Keller; G. Kieft; E. Koffeman; H. Kok; P....

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The first prototype of a photo-detection unit of the future KM3NeT neutrino telescope has been deployed in the deep waters of the Mediterranean Sea. This digital optical module has a novel design with a very large photocathode area segmented by the use of 31 three inch photomultiplier tubes. It has been integrated in the ANTARES detector for in-situ testing and validation. This paper reports on the first months of data taking and rate measurements. The analysis results highlight the...
Topics: Physics, Instrumentation and Methods for Astrophysics, Astrophysics, Instrumentation and Detectors
Source: http://arxiv.org/abs/1405.0839

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The prototype detection unit of the KM3NeT detector

Jun 28, 2018 06/18

by KM3NeT Collaboration; S. Adrián-Martínez; M. Ageron; F. Aharonian; S. Aiello; A. Albert; F. Ameli; E. G. Anassontzis; G. C. Androulakis; M. Anghinolfi; G. Anton; G. Grella; A. Grmek; R. Habel; H. van Haren; T. Heid; A. Heijboer; E. Heine; S. Henry; J. J. Hernández-Rey; B. Herold; S. Anvar; M. A. Hevinga; M. van der Hoek; J. Hofestädt; J. Hogenbirk; C. Hugon; J. Hößl; M. Imbesi; C. W. James; P. Jansweijer; J. Jochum; M. Ardid; M. de Jong; M. Jongen; M. Kadler; O. Kalekin; A. Kappes; E....

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A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80km offshore the Italian coast. KM3NeT in its final configuration will contain several hundreds of detection units. Each detection unit is a mechanical structure anchored to the sea floor, held vertical by a submerged buoy and supporting optical modules for the detection of Cherenkov light emitted by charged secondary particles emerging from neutrino interactions. This prototype string...
Topics: High Energy Physics - Experiment, Instrumentation and Methods for Astrophysics, Astrophysics,...
Source: http://arxiv.org/abs/1510.01561

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50 50

Background studies for acoustic neutrino detection at the South Pole

Sep 22, 2013 09/13

by The IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar; M. Ahlers; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser; O. Botner; J. Braun; A. M. Brown; S....

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The detection of acoustic signals from ultra-high energy neutrino interactions is a promising method to measure the tiny flux of cosmogenic neutrinos expected on Earth. The energy threshold for this process depends strongly on the absolute noise level in the target material. The South Pole Acoustic Test Setup (SPATS), deployed in the upper part of four boreholes of the IceCube Neutrino Observatory, has monitored the noise in Antarctic ice at the geographic South Pole for more than two years...
Source: http://arxiv.org/abs/1103.1216v2

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Calibration and Characterization of the IceCube Photomultiplier Tube

Sep 20, 2013 09/13

by The IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar; M. Ahlers; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; M. Bissok; E. Blaufuss; D. J. Boersma; C. Bohm; O. Botner; L. Bradley; J. Braun; S. Buitink; M. Carson; D. Chirkin; B. Christy; J. Clem; S. Cohen;...

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Over 5,000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-inch diameter R7081-02 made by Hamamatsu Photonics. This paper describes the laboratory characterization and calibration of these PMTs before...
Source: http://arxiv.org/abs/1002.2442v1

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Limits on Neutrino Emission from Gamma-Ray Bursts with the 40 String IceCube Detector

Sep 22, 2013 09/13

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IceCube has become the first neutrino telescope with a sensitivity below the TeV neutrino flux predicted from gamma-ray bursts if GRBs are responsible for the observed cosmic-ray flux above $10^{18}$ eV. Two separate analyses using the half-complete IceCube detector, one a dedicated search for neutrinos from $p \gamma$-interactions in the prompt phase of the GRB fireball, and the other a generic search for any neutrino emission from these sources over a wide range of energies and emission...
Source: http://arxiv.org/abs/1101.1448v2

Arxiv.org

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Constraints on high-energy neutrino emission from SN 2008D

Sep 22, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar; M. Ahlers; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Boser; O. Botner; J. Braun; S. Buitink; M. Carson; D. Chirkin;...

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SN 2008D, a core collapse supernova at a distance of 27 Mpc, was serendipitously discovered by the Swift satellite through an associated X-ray flash. Core collapse supernovae have been observed in association with long gamma-ray bursts and X-ray flashes and a physical connection is widely assumed. This connection could imply that some core collapse supernovae possess mildly relativistic jets in which high-energy neutrinos are produced through proton-proton collisions. The predicted neutrino...
Source: http://arxiv.org/abs/1101.3942v1

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The first search for extremely-high energy cosmogenic neutrinos with the IceCube Neutrino Observatory

Sep 19, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar; M. Ahlers; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. L. Benabderrahmane; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; M. Bissok; E. Blaufuss; D. J. Boersma; C. Bohm; S. Böser; O. Botner; L. Bradley; J. Braun; S. Buitink; M. Carson; D. Chirkin; B. Christy; J. Clem; F....

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We report on the results of the search for extremely-high energy (EHE) neutrinos with energies above $10^7$ GeV obtained with the partially ($\sim$30%) constructed IceCube in 2007. From the absence of signal events in the sample of 242.1 days of effective livetime, we derive a 90% C.L. model independent differential upper limit based on the number of signal events per energy decade at $E^2 \phi_{\nu_e+\nu_\mu+\nu_\tau}\simeq 1.4 \times 10^{-6}$ GeV cm$^{-2}$ sec$^{-1}$ sr$^{-1}$ for neutrinos...
Source: http://arxiv.org/abs/1009.1442v1

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All-particle cosmic ray energy spectrum measured with 26 IceTop stations

Sep 23, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; D. Altmann; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; V. Baum; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. Bell; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser;...

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We report on a measurement of the cosmic ray energy spectrum with the IceTop air shower array, the surface component of the IceCube Neutrino Observatory at the South Pole. The data used in this analysis were taken between June and October, 2007, with 26 surface stations operational at that time, corresponding to about one third of the final array. The fiducial area used in this analysis was 0.122 km^2. The analysis investigated the energy spectrum from 1 to 100 PeV measured for three different...
Source: http://arxiv.org/abs/1202.3039v1

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A Search for a Diffuse Flux of Astrophysical Muon Neutrinos with the IceCube 40-String Detector

Sep 21, 2013 09/13

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The IceCube Neutrino Observatory is a 1 km$^{3}$ detector currently taking data at the South Pole. One of the main strategies used to look for astrophysical neutrinos with IceCube is the search for a diffuse flux of high-energy neutrinos from unresolved sources. A hard energy spectrum of neutrinos from isotropically distributed astrophysical sources could manifest itself as a detectable signal that may be differentiated from the atmospheric neutrino background by spectral measurement. This...
Source: http://arxiv.org/abs/1104.5187v5

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An Absence of Neutrinos Associated with Cosmic Ray Acceleration in Gamma-Ray Bursts

Sep 21, 2013 09/13

by IceCube Collaboration; R. Abbasi; Y. Abdou; T. Abu-Zayyad; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; D. Altmann; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; R. Bay; J. L. Bazo Alba; K. Beattie; J. J. Beatty; S. Bechet; J. K. Becker; K. -H. Becker; M. Bell; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; C. Bohm; D. Bose; S. Böser; O. Botner;...

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Gamma-Ray Bursts (GRBs) have been proposed as a leading candidate for acceleration of ultra high-energy cosmic rays, which would be accompanied by emission of TeV neutrinos produced in proton-photon interactions during acceleration in the GRB fireball. Two analyses using data from two years of the IceCube detector produced no evidence for this neutrino emission, placing strong constraints on models of neutrino and cosmic-ray production in these sources.
Source: http://arxiv.org/abs/1204.4219v2

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Observation of an Anisotropy in the Galactic Cosmic Ray arrival direction at 400 TeV with IceCube

Sep 23, 2013 09/13

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In this paper we report the first observation in the Southern hemisphere of an energy dependence in the Galactic cosmic ray anisotropy up to a few hundred TeV. This measurement was performed using cosmic ray induced muons recorded by the partially deployed IceCube observatory between May 2009 and May 2010. The data include a total of 33$\times 10^{9}$ muon events with a median angular resolution of $\sim3^{\circ}$ degrees. A sky map of the relative intensity in arrival direction over the...
Source: http://arxiv.org/abs/1109.1017v1

Arxiv.org

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Search for Dark Matter from the Galactic Halo with the IceCube Neutrino Observatory

Sep 22, 2013 09/13

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Self-annihilating or decaying dark matter in the Galactic halo might produce high energy neutrinos detectable with neutrino telescopes. We have conducted a search for such a signal using 276 days of data from the IceCube 22-string configuration detector acquired during 2007 and 2008. The effect of halo model choice in the extracted limit is reduced by performing a search that considers the outer halo region and not the Galactic Center. We constrain any large scale neutrino anisotropy and are...
Source: http://arxiv.org/abs/1101.3349v1

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