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28
Sep 22, 2013
09/13
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K. Arnold; P. A. R. Ade; A. E. Anthony; D. Barron; D. Boettger; J. Borrill; S. Chapman; Y. Chinone; M. A. Dobbs; J. Errard; G. Fabbian; D. Flanigan; G. Fuller; A. Ghribi; W. Grainger; N. Halverson; M. Hasegawa; K. Hattori; M. Hazumi; W. L. Holzapfel; J. Howard; P. Hyland; A. Jaffe; B. Keating; Z. Kermish; T. Kisner; M. Le Jeune; A. T. Lee; E. Linder; M. Lungu; F. Matsuda; T. Matsumura; N. J. Miller; X. Meng; H. Morii; S. Moyerman; M. J. Myers; H. Nishino; H. Paar; E. Quealy; C. Reichardt; P. L. Richards; C. Ross; A. Shimizu; C. Shimmin; M. Shimon; M. Sholl; P. Siritanasak; H. Spieler; N. Stebor; B. Steinbach; R. Stompor; A. Suzuki; T. Tomaru; C. Tucker; O. Zahn
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The Polarbear Cosmic Microwave Background (CMB) polarization experiment is currently observing from the Atacama Desert in Northern Chile. It will characterize the expected B-mode polarization due to gravitational lensing of the CMB, and search for the possible B-mode signature of inflationary gravitational waves. Its 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter. Each detector's...
Source: http://arxiv.org/abs/1210.7877v1
2
2.0
Jun 30, 2018
06/18
by
The POLARBEAR Collaboration; P. A. R. Ade; Y. Akiba; A. E. Anthony; K. Arnold; M. Atlas; D. Barron; D. Boettger; J. Borrill; S. Chapman; Y. Chinone; M. Dobbs; T. Elleflot; J. Errard; G. Fabbian; C. Feng; D. Flanigan; A. Gilbert; W. Grainger; N. W. Halverson; M. Hasegawa; K. Hattori; M. Hazumi; W. L. Holzapfel; Y. Hori; J. Howard; P. Hyland; Y. Inoue; G. C. Jaehnig; A. H. Jaffe; B. Keating; Z. Kermish; R. Keskitalo; T. Kisner; M. Le Jeune; A. T. Lee; E. M. Leitch; E. Linder; M. Lungu; F. Matsuda; T. Matsumura; X. Meng; N. J. Miller; H. Morii; S. Moyerman; M. J. Myers; M. Navaroli; H. Nishino; H. Paar; J. Peloton; D. Poletti; E. Quealy; G. Rebeiz; C. L. Reichardt; P. L. Richards; C. Ross; I. Schanning; D. E. Schenck; B. D. Sherwin; A. Shimizu; C. Shimmin; M. Shimon; P. Siritanasak; G. Smecher; H. Spieler; N. Stebor; B. Steinbach; R. Stompor; A. Suzuki; S. Takakura; T. Tomaru; B. Wilson; A. Yadav; O. Zahn
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eye 2
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We report a measurement of the B-mode polarization power spectrum in the cosmic microwave background (CMB) using the POLARBEAR experiment in Chile. The faint B-mode polarization signature carries information about the Universe's entire history of gravitational structure formation, and the cosmic inflation that may have occurred in the very early Universe. Our measurement covers the angular multipole range 500 < l < 2100 and is based on observations of an effective sky area of 25 square...
Topics: Instrumentation and Methods for Astrophysics, Astrophysics, Cosmology and Nongalactic Astrophysics
Source: http://arxiv.org/abs/1403.2369
2
2.0
Jun 30, 2018
06/18
by
D. Barron; P. A. R. Ade; Y. Akiba; C. Aleman; K. Arnold; M. Atlas; A. Bender; D. Boettger; J. Borrill; S. Chapman; Y. Chinone; A. Cukierman; M. Dobbs; T. Elleflot; J. Errard; G. Fabbian; C. Feng; A. Gilbert; N. Goeckner-Wald; N. W. Halverson; M. Hasegawa; K. Hattori; M. Hazumi; W. L. Holzapfel; Y. Hori; Y. Inoue; G. C. Jaehnig; A. H. Jaffe; N. Katayama; B. Keating; Z. Kermish; R. Keskitalo; T. Kisner; M. Le Jeune; A. T. Lee; E. M. Leitch; E. Linder; F. Matsuda; T. Matsumura; X. Meng; H. Morii; M. J. Myers; M. Navaroli; H. Nishino; T. Okamura; H. Paar; J. Peloton; D. Poletti; C. Raum; G. Rebeiz; C. L. Reichardt; P. L. Richards; C. Ross; K. Rotermund; D. E. Schenck; B. D. Sherwin; I. Shirley; M. Sholl; P. Siritanasak; G. Smecher; N. Stebor; B. Steinbach; R. Stompor; A. Suzuki; J. Suzuki; S. Takada; S. Takakura; T. Tomaru; B. Wilson; A. Yadav; H. Yamaguchi; O. Zahn
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eye 2
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POLARBEAR-2 is a next-generation receiver for precision measurements of the polarization of the cosmic microwave background (Cosmic Microwave Background (CMB)). Scheduled to deploy in early 2015, it will observe alongside the existing POLARBEAR-1 receiver, on a new telescope in the Simons Array on Cerro Toco in the Atacama desert of Chile. For increased sensitivity, it will feature a larger area focal plane, with a total of 7,588 polarization sensitive antenna-coupled Transition Edge Sensor...
Topics: Instrumentation and Methods for Astrophysics, Astrophysics
Source: http://arxiv.org/abs/1410.7488
2
2.0
Jun 29, 2018
06/18
by
Brian Y. Sun; J. X. Meng
texts
eye 2
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Recently, Z. W. Sun introduced a sequence $(S_n)_{n\geq 0}$, where $S_n=\frac{\binom{6n}{3n} \binom{3n}{n}}{2(2n+1)\binom{2n}{n}}$, and found one congruence and two convergent series on $S_n$ by {\tt{Mathematica}}. Furthermore, he proposed some related conjectures. In this paper, we first give analytic proofs of his two convergent series and then confirm one of his conjectures by invoking series expansions of $\sin(t\arcsin(x))$ and $\cos(t\arcsin(x)).$
Topics: Combinatorics, Mathematics
Source: http://arxiv.org/abs/1606.08153
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51
Sep 19, 2013
09/13
by
H. Tsuchiya; H. Miyasaka; E. Takahashi; S. Shimoda; Y. Yamada; I. Kondo; K. Makishima; F. Zhu; Y. Tan; H. Hu; Y. Tang; J. Zhang; H. Lu; X. Meng
texts
eye 51
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The purpose of this work is to search the Yangbajing neutron monitor data obtained between 1998 October and 2000 June for solar neutrons associated with solar flares. Using the onset times of 166 BATSE-detected flares with the GOES peak flux (1 -- 8 \AA) higher than $1.0 \times 10^{-5}$ $\mathrm{Wm^{-2}}$, we prepare for each flare a light curve of the Yangbajing neutron monitor, spanning $\pm$ 1.5 hours from the BATSE onset time. Based on the light curves, a systematic search for solar...
Source: http://arxiv.org/abs/astro-ph/0703428v1
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48
Sep 22, 2013
09/13
by
Z. Kermish; P. Ade; A. Anthony; K. Arnold; K. Arnold; D. Barron; D. Boettger; J. Borrill; S. Chapman; Y. Chinone; M. A. Dobbs; J. Errard; G. Fabbian; D. Flanigan; G. Fuller; A. Ghribi; W. Grainger; N. Halverson; M. Hasegawa; K. Hattori; M. Hazumi; W. L. Holzapfel; J. Howard; P. Hyland; A. Jaffe; B. Keating; T. Kisner; A. T. Lee; M. Le Jeune; E. Linder; M. Lungu; F. Matsuda; T. Matsumura; X. Meng; N. J. Miller; H. Morii; S. Moyerman; M. J. Myers; H. Nishino; H. Paar; E. Quealy; C. L. Reichardt; P. L. Richards; C. Ross; A. Shimizu; M. Shimon; C. Shimmin; M. Sholl; P. Siritanasak; H. Spieler; N. Stebor; B. Steinbach; R. Stompor; A. Suzuki; T. Tomaru; C. Tucker; O. Zahn
texts
eye 48
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We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5 arcminute beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to...
Source: http://arxiv.org/abs/1210.7768v1
32
32
Sep 20, 2013
09/13
by
X. Meng; X. Chen; Z. Han
texts
eye 32
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The single-degenerate channel for the progenitors of type Ia supernovae (SNe Ia) are currently accepted, in which a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from its companion, increases its mass to the Chandrasekhar mass limit, and then explodes as a SN Ia. Incorporating the prescription of \citet{HAC99a} for the accretion efficiency into Eggleton's stellar evolution code and assuming that the prescription is valid for \emph{all} metallicities, we performed binary...
Source: http://arxiv.org/abs/0802.2471v2
48
48
Sep 21, 2013
09/13
by
X. Meng; X. Chen; Z. Han
texts
eye 48
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Using a simple analytic method, we calculate the impact effect between the ejecta of a SN Ia and its companion to survey the influence of initial parameters of the progenitor's system, which is useful for searching the companion in a explosion remnant. The companion models are obtained from Eggleton's evolution code.The results are divided into two groups based on mass transfer stage. For a given condition, more hydrogen-rich material is stripped from the envelope of a Hertzsprung-gap companion...
Source: http://arxiv.org/abs/0706.3581v1
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33
Sep 21, 2013
09/13
by
B. Wang; X. Meng; X. Chen; Z. Han
texts
eye 33
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Type Ia supernovae (SNe Ia) play an important role in astrophysics, especially in the study of cosmic evolution. There are several progenitor models for SNe Ia proposed in the past years. In this paper, we have carried out a detailed study of the He star donor channel, in which a carbon-oxygen white dwarf (CO WD) accretes material from a He main sequence star or a He subgiant to increase its mass to the Chandrasekhar mass. Employing Eggleton's stellar evolution code with an optically thick wind...
Source: http://arxiv.org/abs/0901.3496v1
40
40
Sep 21, 2013
09/13
by
The Polarbear Collaboration; J. Errard; P. A. R. Ade; A. Anthony; K. Arnold; F. Aubin; D. Boettger; J. Borrill; C. Cantalupo; M. A. Dobbs; D. Flanigan; A. Ghribi; N. Halverson; M. Hazumi; W. L. Holzapfel; J. Howard; P. Hyland; A. Jaffe; B. Keating; T. Kisner; Z. Kermish; A. T. Lee; E. Linder; M. Lungu; T. Matsumura; N. Miller; X. Meng; M. Myers; H. Nishino; R. O'Brient; D. O'Dea; C. Reichardt; I. Schanning; A. Shimizu; C. Shimmin; M. Shimon; H. Spieler; B. Steinbach; R. Stompor; A. Suzuki; T. Tomaru; H. T. Tran; C. Tucker; E. Quealy; P. L. Richards; O. Zahn
texts
eye 40
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We describe the Cosmic Microwave Background (CMB) polarization experiment called Polarbear. This experiment will use the dedicated Huan Tran Telescope equipped with a powerful 1,200-bolometer array receiver to map the CMB polarization with unprecedented accuracy. We summarize the experiment, its goals, and current status.
Source: http://arxiv.org/abs/1011.0763v1
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44
Sep 23, 2013
09/13
by
X. Meng; X. Chen; Z. Han
texts
eye 44
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Following Paczy\'{n}ski & Zi\'{o}lkowski (1968) and Han et al. (1994), we assume that the envelope of an asymptotic giant branch (AGB) or a first giant branch (FGB) star is lost when the binding energy of the envelope is equal to zero ($\Delta W=0$) and the core mass of the AGB star or the FGB star at the point ($\Delta W=0$) is taken as the final mass. Using this assumption, we calculate the IFMRs for stars of different metallicities.We find that the IFMRs depends strongly on the...
Source: http://arxiv.org/abs/0710.2397v3
