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138 138

The Earliest Optical Observations of GRB 030329

Sep 22, 2013 09/13

by K. Torii; T. Kato; H. Yamaoka; T. Kohmura; Y. Okamoto; K. Ohnishi; K. Kadota; S. Yoshida; K. Kinugasa; M. Kohama; T. Oribe; T. Kawabata

eye 138

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We present the earliest optical imaging observations of GRB 030329 related to SN 2003dh. The burst was detected by the HETE-2 satellite at 2003 March 29, 11:37:14.67 UT. Our wide-field monitoring started 97 minutes before the trigger and the burst position was continuously observed. We found no precursor or contemporaneous flare brighter than $V=5.1$ ($V=5.5$) in 32 s (64 s) timescale between 10:00 and 13:00 UT. Follow-up time series photometries started at 12:51:39 UT (75 s after position...
Source: http://arxiv.org/abs/astro-ph/0309563v1

Arxiv.org

42 42

Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff

Sep 22, 2013 09/13

by M. Takeda; N. Hayashida; K. Honda; N. Inoue; K. Kadota; F. Kakimoto; K. Kamata; S. Kawaguchi; Y. Kawasaki; N. Kawasumi; H. Kitamura; E. Kusano; Y. Matsubara; K. Murakami; M. Nagano; D. Nishikawa; H. Ohoka; N. Sakaki; M. Sasaki; K. Shinozaki; N. Souma; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii

eye 42

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The cosmic-ray energy spectrum above 10^{18.5} eV is reported using the updated data set of the Akeno Giant Air Shower Array (AGASA) from February 1990 to October 1997. The energy spectrum extends beyond 10^{20} eV and the energy gap between the highest energy event and the others is being filled up with recently observed events. The spectral shape suggests the absence of the 2.7 K cutoff in the energy spectrum or a possible presence of a new component beyond the 2.7 K cutoff.
Source: http://arxiv.org/abs/astro-ph/9807193v1

Arxiv.org

44 44

Updated AGASA event list above 4x10^19eV

Sep 18, 2013 09/13

by N. Hayashida; K. Honda; N. Inoue; K. Kadota; F. Kakimoto; S. Kakizawa; K. Kamata; S. Kawaguchi; Y. Kawasaki; N. Kawasumi; E. Kusano; A. M. Mahrous; K. Mase; T. Minagawa; M. Nagano; D. Nishikawa; H. Ohoka; S. Osone; N. Sakaki; M. Sasaki; K. Shinozaki; M. Takeda; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii

eye 44

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After our Ap.J. publication of the Akeno Giant Air Shower Array (AGASA) results in 1999 (Takeda et al., 1999), we observed nine events with energies above 4 $\times$ 10$^{19}$eV until May 2000. This short report lists the coordinates of these events, and shows the updated energy spectrum and arrival direction map. The analysis was carried out with the same procedure employed in the Ap.J. publication.
Source: http://arxiv.org/abs/astro-ph/0008102v1

Arxiv.org

46 46

$The Anisotropy of Cosmic Ray Arrival Directions around 10$^{18}$eV$

The Anisotropy of Cosmic Ray Arrival Directions around 10$^{18}$eV

Sep 22, 2013 09/13

by AGASA Collaboration; N. Hayashida; K. Honda; N. Inoue; K. Kadota; F. Kakimoto; K. Kamata; S. Kawaguchi; Y. Kawasaki; N. Kawasumi; H. Kitamura; E. Kusano; Y. Matsubara; K. Murakami; M. Nagano; D. Nishikawa; H. Ohoka; N. Sakaki; M. Sasaki; K. Shinozaki; N. Souma; M. Takeda; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii

eye 46

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Anisotropy in the arrival directions of cosmic rays with energies above 10$^{17}$eV is studied using data from the Akeno 20 km$^2$ array and the Akeno Giant Air Shower Array (AGASA), using a total of about 117,000 showers observed during 11 years. In the first harmonic analysis, we have found strong anisotropy of $\sim$ 4% around 10$^{18}$eV, corresponding to a chance probability of 0.2%. With two dimensional analysis in right ascension and declination, this anisotropy is interpreted as an...
Source: http://arxiv.org/abs/astro-ph/9807045v2

Arxiv.org

104 104

Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array

Jul 20, 2013 07/13

by M. Takeda; N. Hayashida; K. Honda; N. Inoue; K. Kadota; F. Kakimoto; K. Kamata; S. Kawaguchi; Y. Kawasaki; N. Kawasumi; E. Kusano; Y. Matsubara; K. Murakami; M. Nagano; D. Nishikawa; H. Ohoka; S. Osone; N. Sakaki; M. Sasaki; K. Shinozaki; N. Souma; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii

eye 104

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With the Akeno Giant Air Shower Array (AGASA), 581 cosmic rays above 10^19eV, 47 above 4 x 10^19eV, and 7 above 10^20eV are observed until August 1998. Arrival direction distribution of these extremely high energy cosmic rays has been studied. While no significant large-scale anisotropy is found on the celestial sphere, some interesting clusters of cosmic rays are observed. Above 4 x 10^19eV, there are one triplet and three doublets within separation angle of 2.5^o and the probability of...
Source: http://arxiv.org/abs/astro-ph/9902239v2

Arxiv.org

61 61

The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV

Jul 20, 2013 07/13

by N. Hayashida; K. Honda; N. Inoue; K. Kadota; F. Kakimoto; S. Kakizawa; K. Kamata; S. Kawaguchi; Y. Kawasaki; N. Kawasumi; E. Kusano; Y. Matsubara; K. Mase; T. Minagawa; K. Murakami; M. Nagano; D. Nishikawa; H. Ohoka; S. Osone; N. Sakaki; M. Sasaki; M. Sasano; K. Shinozaki; M. Takeda; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii; The AGASA Collaboration

eye 61

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Anisotropy in the arrival directions of cosmic rays around 10^{18}eV is studied using data from the Akeno 20 km^2 array and the Akeno Giant Air Shower Array (AGASA), using a total of about 216,000 showers observed over 15 years above 10^{17}eV. In the first harmonic analysis, we have found significant anisotropy of $\sim$ 4 % around 10^{18}eV, corresponding to a chance probability of $\sim 10^{-5}$ after taking the number of independent trials into account. With two dimensional analysis in...
Source: http://arxiv.org/abs/astro-ph/9906056v1

Arxiv.org

55 55

Energy determination in the Akeno Giant Air Shower Array experiment

Sep 19, 2013 09/13

by M. Takeda; N. Sakaki; K. Honda; M. Chikawa; M. Fukushima; N. Hayashida; N. Inoue; K. Kadota; F. Kakimoto; K. Kamata; S. Kawaguchi; S. Kawakami; Y. Kawasaki; N. Kawasumi; A. M. Mahrous; K. Mase; S. Mizobuchi; Y. Morizane; M. Nagano; H. Ohoka; S. Osone; M. Sasaki; M. Sasano; H. M. Shimizu; K. Shinozaki; M. Teshima; R. Torii; I. Tsushima; Y. Uchihori; T. Yamamoto; S. Yoshida; H. Yoshii

eye 55

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Using data from more than ten-years of observations with the Akeno Giant Air Shower Array (AGASA), we published a result that the energy spectrum of ultra-high energy cosmic rays extends beyond the cutoff energy predicted by Greisen, and Zatsepin and Kuzmin. In this paper, we reevaluate the energy determination method used for AGASA events with respect to the lateral distribution of shower particles, their attenuation with zenith angle, shower front structure, delayed particles observed far...
Source: http://arxiv.org/abs/astro-ph/0209422v3

Arxiv.org

65 65

New air fluorescence detectors employed in the Telescope Array experiment

Sep 18, 2013 09/13

by H. Tokuno; Y. Tameda; M. Takeda; K. Kadota; D. Ikeda; M. Chikawa; T. Fujii; M. Fukushima; K. Honda; N. Inoue; F. Kakimoto; S. Kawana; E. Kido; J. N. Matthews; T. Nonaka; S. Ogio; T. Okuda; S. Ozawa; H. Sagawa; N. Sakurai; T. Shibata; A. Taketa; S. B. Thomas; T. Tomida; Y. Tsunesada; S. Udo; T. Abu-zayyad; R. Aida; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; J. Chiba; E. J. Cho; W. R. Cho; H. Fujii; T. Fukuda; D. Gorbunov; W....

eye 65

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Since 2007, the Telescope Array (TA) experiment, based in Utah, USA, has been observing ultra high energy cosmic rays to understand their origins. The experiment involves a surface detector (SD) array and three fluorescence detector (FD) stations. FD stations, installed surrounding the SD array, measure the air fluorescence light emitted from extensive air showers (EASs) for precise determination of their energies and species. The detectors employed at one of the three FD stations were...
Source: http://arxiv.org/abs/1201.0002v1

Arxiv.org

7 7.0

Search for EeV Protons of Galactic Origin

Jun 29, 2018 06/18

by R. U. Abbasi; M. Abe; T. Abu-Zayyad; M. Allen; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; A. Taketa; M. Takita; Y. Tameda; M. Tanaka; K. Tanaka; H. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; A. H. Tirone; J. Chiba; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; Y. Tsunesada; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; T. Wong; M. Chikawa; R. Yamane; H. Yamaoka; K. Yamazaki; J. Yang; K. Yashiro; Y. Yoneda; S. Yoshida; H. Yoshii; R. Zollinger;...

eye 7

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Cosmic rays in the energy range $10^{18.0}$ - $10^{18.5}$ eV are thought to have a light, probably protonic, composition. To study their origin one can search for anisotropy in their arrival directions. Extragalactic cosmic rays should be isotropic, but galactic cosmic rays of this type should be seen mostly along the galactic plane, and there should be a shortage of events coming from directions near the galactic anticenter. This is due to the fact that, under the influence of the galactic...
Topics: Astrophysics, High Energy Astrophysical Phenomena
Source: http://arxiv.org/abs/1608.06306

Arxiv.org

3 3.0

A Northern Sky Survey for Point-Like Sources of EeV Neutral Particles with the Telescope Array Experiment

Jun 30, 2018 06/18

by R. U. Abbasi; M. Abe; T. Abu-Zayyad; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; Y. Tsunesada; M. J. Chae; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; G. Vasiloff; T. Wong; R. Yamane; H. Yamaoka; K. Yamazaki; J. Yang; B. G. Cheon; K. Yashiro; Y. Yoneda; S. Yoshida; H. Yoshii; R. Zollinger; Z. Zundel; J. Chiba; M. Chikawa; W. R. Cho;...

eye 3

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We report on the search for steady point-like sources of neutral particles around 10$^{18}$ eV between 2008 May and 2013 May with the scintillator surface detector of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that...
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1407.6145

Arxiv.org

78 78

The surface detector array of the Telescope Array experiment

Sep 18, 2013 09/13

by T. Abu-Zayyad; R. Aida; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; J. Chiba; M. Chikawa; E. J. Cho; W. R. Cho; H. Fujii; T. Fujii; T. Fukuda; M. Fukushima; D. Gorbunov; W. Hanlon; K. Hayashi; Y. Hayashi; N. Hayashida; K. Hibino; K. Hiyama; K. Honda; T. Iguchi; D. Ikeda; K. Ikuta; N. Inoue; T. Ishii; R. Ishimori; D. Ivanov; S. Iwamoto; C. C. H. Jui; K. Kadota; F. Kakimoto; O. Kalashev; T. Kanbe; K. Kasahara; H. Kawai; S....

eye 78

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The Telescope Array (TA) experiment, located in the western desert of Utah,USA, is designed for observation of extensive air showers from extremely high energy cosmic rays. The experiment has a surface detector array surrounded by three fluorescence detectors to enable simultaneous detection of shower particles at ground level and fluorescence photons along the shower track. The TA surface detectors and fluorescence detectors started full hybrid observation in March, 2008. In this article we...
Source: http://arxiv.org/abs/1201.4964v3

Arxiv.org

13 13

Measurement of the Proton-Air Cross Section with Telescope Array's Middle Drum Detector and Surface Array in Hybrid Mode

Jun 27, 2018 06/18

eye 13

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In this work we are reporting on the measurement of the proton-air inelastic cross section $\sigma^{\rm inel}_{\rm p-air}$ using the Telescope Array (TA) detector. Based on the measurement of the $\sigma^{\rm inel}_{\rm p-air}$ the proton-proton cross section $\sigma_{\rm p-p}$ value is also determined at $\sqrt{s} = 95_{-8}^{+5}$ TeV. Detecting cosmic ray events at ultra high energies with Telescope Array enables us to study this fundamental parameter that we are otherwise unable to access...
Topics: High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics, Astrophysics,...
Source: http://arxiv.org/abs/1505.01860

Arxiv.org

4 4.0

Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment

Jun 30, 2018 06/18

by The Telescope Array Collaboration; R. U. Abbasi; M. Abe; T. Abu-Zayyad; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; H. Tanaka; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; R. Cady; Y. Tsunesada; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; G. Vasiloff; T. Wong; R. Yamane; H. Yamaoka; K. Yamazaki; M. J. Chae; J. Yang; K. Yashiro; Y. Yoneda; S. Yoshida; H. Yoshii; R. Zollinger; Z. Zundel;...

eye 4

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We have searched for intermediate-scale anisotropy in the arrival directions of ultrahigh-energy cosmic rays with energies above 57~EeV in the northern sky using data collected over a 5 year period by the surface detector of the Telescope Array experiment. We report on a cluster of events that we call the hotspot, found by oversampling using 20$^\circ$-radius circles. The hotspot has a Li-Ma statistical significance of 5.1$\sigma$, and is centered at R.A.=146.7$^{\circ}$, Dec.=43.2$^{\circ}$....
Topics: High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1404.5890

Arxiv.org

4 4.0

Study of Ultra-High Energy Cosmic Ray Composition Using Telescope Array's Middle Drum Detector and Surface Array in Hybrid Mode

Jun 30, 2018 06/18

by R. U. Abbasi; M. Abe; T. Abu-Zayyad; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; H. Tanaka; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; M. J. Chae; Y. Tsunesada; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; G. Vasiloff; T. Wong; R. Yamane; H. Yamaoka; K. Yamazaki; B. G. Cheon; J. Yang; K. Yashiro; Y. Yoneda; S. Yoshida; H. Yoshiia; R. Zollinger; Z. Zundel; J. Chiba; M....

eye 4

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Previous measurements of the composition of Ultra-High Energy Cosmic Rays(UHECRs) made by the High Resolution Fly's Eye(HiRes) and Pierre Auger Observatory(PAO) are seemingly contradictory, but utilize different detection methods, as HiRes was a stereo detector and PAO is a hybrid detector. The five year Telescope Array(TA) Middle Drum hybrid composition measurement is similar in some, but not all, respects in methodology to PAO, and good agreement is evident between data and a light, largely...
Topics: Instrumentation and Methods for Astrophysics, High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1408.1726

Arxiv.org

80 80

The Cosmic Ray Energy Spectrum Observed with the Surface Detector of the Telescope Array Experiment

Sep 20, 2013 09/13

by T. Abu-Zayyad; R. Aida; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; J. Chiba; M. Chikawa; E. J. Cho; W. R. Cho; H. Fujii; T. Fujii; T. Fukuda; M. Fukushima; W. Hanlon; K. Hayashi; Y. Hayashi; N. Hayashida; K. Hibino; K. Hiyama; K. Honda; T. Iguchi; D. Ikeda; K. Ikuta; N. Inoue; T. Ishii; R. Ishimori; D. Ivanov; S. Iwamoto; C. C. H. Jui; K. Kadota; F. Kakimoto; O. Kalashev; T. Kanbe; K. Kasahara; H. Kawai; S. Kawakami; S. Kawana;...

eye 80

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The Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high energy cosmic rays with primary energies above 1.6 x 10^(18) eV. This measurement is based upon four years of observation by the surface detector component of TA. The spectrum shows a dip at an energy of 4.6 x 10^(18) eV and a steepening at 5.4 x 10^(19) eV which is consistent with the expectation from the GZK cutoff. We present the results of a technique, new to the analysis of ultra-high energy cosmic ray...
Source: http://arxiv.org/abs/1205.5067v3

Arxiv.org

69 69

Upper limit on the flux of photons with energies above 10^19 eV using Telescope Array surface detector

Sep 17, 2013 09/13

eye 69

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We search for ultra-high energy photons by analyzing geometrical properties of shower fronts of events registered by the Telescope Array surface detector. By making use of an event-by-event statistical method, we derive upper limits on the absolute flux of primary photons with energies above 10^19, 10^19.5 and 10^20 eV based on the first three years of data taken.
Source: http://arxiv.org/abs/1304.5614v1

Arxiv.org

78 78

Search for Anisotropy of Ultra-High Energy Cosmic Rays with the Telescope Array Experiment

Sep 20, 2013 09/13

by T. Abu-Zayyad; R. Aida; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; J. Chiba; M. Chikawa; E. J. Cho; W. R. Cho; H. Fujii; T. Fujii; T. Fukuda; M. Fukushima; W. Hanlon; K. Hayashi; Y. Hayashi; N. Hayashida; K. Hibino; K. Hiyama; K. Honda; T. Iguchi; D. Ikeda; K. Ikuta; N. Inoue; T. Ishii; R. Ishimori; D. Ivanov; S. Iwamoto; C. C. H. Jui; K. Kadota; F. Kakimoto; O. Kalashev; T. Kanbe; K. Kasahara; H. Kawai; S. Kawakami; S. Kawana;...

eye 78

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We study the anisotropy of Ultra-High Energy Cosmic Ray (UHECR) events collected by the Telescope Array (TA) detector in the first 40 months of operation. Following earlier studies, we examine event sets with energy thresholds of 10 EeV, 40 EeV, and 57 EeV. We find that the distributions of the events in right ascension and declination are compatible with an isotropic distribution in all three sets. We then compare with previously reported clustering of the UHECR events at small angular scales....
Source: http://arxiv.org/abs/1205.5984v1

Arxiv.org

52 52

The Energy Spectrum of Telescope Array's Middle Drum Detector and the Direct Comparison to the High Resolution Fly's Eye Experiment

Sep 23, 2013 09/13

eye 52

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The Telescope Array's Middle Drum fluorescence detector was instrumented with telescopes refurbished from the High Resolution Fly's Eye's HiRes-1 site. The data observed by Middle Drum in monocular mode was analyzed via the HiRes-1 profile-constrained geometry reconstruction technique and utilized the same calibration techniques enabling a direct comparison of the energy spectra and energy scales between the two experiments. The spectrum measured using the Middle Drum telescopes is based on a...
Source: http://arxiv.org/abs/1202.5141v1

Arxiv.org

6 6.0

First Upper Limits on the Radar Cross Section of Cosmic-Ray Induced Extensive Air Showers

Jun 29, 2018 06/18

by R. U. Abbasi; M. Abe; M. Abou Bakr Othman; T. Abu-Zayyad; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; D. Besson; B. T. Stokes; S. R. Stratton; T. A. Stroman; T. Suzawa; H. Takai; M. Takamura; M. Takeda; R. Takeishi; A. Taketa; M. Takita; S. A. Blake; Y. Tameda; H. Tanaka; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; M. Byrne; S. Troitsky; Y. Tsunesada; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; G. Vasiloff; S....

eye 6

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TARA (Telescope Array Radar) is a cosmic ray radar detection experiment colocated with Telescope Array, the conventional surface scintillation detector (SD) and fluorescence telescope detector (FD) near Delta, Utah, U.S.A. The TARA detector combines a 40 kW, 54.1 MHz VHF transmitter and high-gain transmitting antenna which broadcasts the radar carrier over the SD array and within the FD field of view, towards a 250 MS/s DAQ receiver. TARA has been collecting data since 2013 with the primary...
Topics: Astrophysics, Instrumentation and Methods for Astrophysics
Source: http://arxiv.org/abs/1603.05217

Arxiv.org

10 10.0

Pierre Auger Observatory and Telescope Array: Joint Contributions to the 34th International Cosmic Ray Conference (ICRC 2015)

Jun 28, 2018 06/18

by Telescope Array Collaboration; R. U. Abbasi; M. Abe; T. Abu-Zayyad; M. Allen; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; Y. Tsunesada; M. J. Chae; K. Tsutsumi; Y. Uchihori; S. Udo; F. Urban; G. Vasiloff; T. Wong; R. Yamane; H. Yamaoka; K. Yamazaki; J. Yang; B. G. Cheon; K. Yashiro; Y. Yoneda; S. Yoshida; H. Yoshii; R. Zollinger; Z. Zundel; Pierre Auger...

eye 10

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Joint contributions of the Pierre Auger Collaboration and the Telescope Array Collaboration to the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.
Topics: Astrophysics, High Energy Astrophysical Phenomena
Source: http://arxiv.org/abs/1511.02103

Arxiv.org

10 10.0

$Searches for Large-Scale Anisotropy in the Arrival Directions of Cosmic Rays Detected above Energy of $10^{19}$ eV at the Pierre Auger Observatory and the Telescope Array$

Searches for Large-Scale Anisotropy in the Arrival Directions of Cosmic Rays Detected above Energy of $10^{19}$ eV at the Pierre Auger Observatory and the Telescope Array

Jun 30, 2018 06/18

by The Pierre Auger; Telescope Array Collaborations; :; A. Aab; P. Abreu; M. Aglietta; E. J. Ahn; I. Al Samarai; I. F. M. Albuquerque; I. Allekotte; J. Allen; C. Di Giulio; A. Di Matteo; J. C. Diaz; M. L. Díaz Castro; F. Diogo; C. Dobrigkeit; W. Docters; J. C. D'Olivo; A. Dorofeev; Q. Dorosti Hasankiadeh; P. Allison; M. T. Dova; J. Ebr; R. Engel; M. Erdmann; M. Erfani; C. O. Escobar; J. Espadanal; A. Etchegoyen; P. Facal San Luis; H. Falcke; A. Almela; K. Fang; G. Farrar; A. C. Fauth; N. Fazzini;...

eye 10

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Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above $10^{19}$ eV is presented in this work. The resulting...
Topics: Instrumentation and Methods for Astrophysics, High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1409.3128

Arxiv.org

23 23

The IceCube Neutrino Observatory, the Pierre Auger Observatory and the Telescope Array: Joint Contribution to the 34th International Cosmic Ray Conference (ICRC 2015)

Jun 28, 2018 06/18

by IceCube Collaboration; M. G. Aartsen; K. Abraham; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; M. Ahrens; D. Altmann; T. Anderson; I. Ansseau; G. Golup; J. G. Gonzalez; D. Góra; D. Grant; J. C. Groh; A. Groß; C. Ha; C. Haack; A. Haj Ismail; A. Hallgren; M. Archinger; F. Halzen; B. Hansmann; K. Hanson; D. Hebecker; D. Heereman; K. Helbing; R. Hellauer; D. Hellwig; S. Hickford; J. Hignight; C. Arguelles; G. C. Hill; K. D. Hoffman; R. Hoffmann; K. Holzapfel; A. Homeier; K. Hoshina; F....

eye 23

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We have conducted three searches for correlations between ultra-high energy cosmic rays detected by the Telescope Array and the Pierre Auger Observatory, and high-energy neutrino candidate events from IceCube. Two cross-correlation analyses with UHECRs are done: one with 39 cascades from the IceCube `high-energy starting events' sample and the other with 16 high-energy `track events'. The angular separation between the arrival directions of neutrinos and UHECRs is scanned over. The same events...
Topics: High Energy Physics - Experiment, Astrophysics, Instrumentation and Methods for Astrophysics, High...
Source: http://arxiv.org/abs/1511.02109

Arxiv.org

13 13

Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array

Jun 28, 2018 06/18

by The IceCube Collaboration; M. G. Aartsen; K. Abraham; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; M. Ahrens; D. Altmann; T. Anderson; I. Ansseau; Z. Griffith; A. Groß; C. Ha; C. Haack; A. Haj Ismail; A. Hallgren; F. Halzen; E. Hansen; B. Hansmann; K. Hanson; M. Archinger; D. Hebecker; D. Heereman; K. Helbing; R. Hellauer; S. Hickford; J. Hignight; G. C. Hill; K. D. Hoffman; R. Hoffmann; K. Holzapfel; C. Arguelles; A. Homeier; K. Hoshina; F. Huang; M. Huber; W. Huelsnitz; P. O. Hulth; K....

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This paper presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a...
Topics: Astrophysics, High Energy Astrophysical Phenomena
Source: http://arxiv.org/abs/1511.09408

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