The Properties of GRB 120923A at a Spectroscopic Redshift of z approximate to 7.8
文献类型：期刊论文
| 作者 | Tanvir, N. R.1; Laskar, T.2,3; Levan, A. J.4; Perley, D. A.5; Zabl, J.6; Fynbo, J. P. U.6; Rhoads, J.7; Cenko, S. B.8,9; Greiner, J.10,11; Wiersema, K.4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 865期号:2页码:16 |
| 关键词 | dark ages, reionization, first stars galaxies: high-redshift gamma-ray burst: general gamma-ray burst: individual (GRB 120923A) |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aadba9 |
| 英文摘要 | Gamma-ray bursts (GRBs) are powerful probes of early stars and galaxies, during and potentially even before the era of reionization. Although the number of GRBs identified at z greater than or similar to 6 remains small, they provide a unique window on typical star-forming galaxies at that time, and thus are complementary to deep field observations. We report the identification of the optical drop-out afterglow of Swift GRB 120923A in near-infrared Gemini-North imaging, and derive a redshift of z = 7.84(-0.12)(+0.06) from Very Large Telescope/X-shooter spectroscopy. At this redshift the peak 15-150 keV luminosity of the burst was 3.2 x 10(52) erg s(-1), and in this sense it was a rather typical long-duration GRB in terms of rest frame luminosity. This burst was close to the Swift/Burst Alert Telescope detection threshold, and the X-ray and near-infrared afterglow were also faint. We present ground-and space-based follow-up observations spanning from X-ray to radio, and find that a standard external shock model with a constant-density circumburst environment of density n approximate to 4 x 10(-2) cm(-3) gives a good fit to the data. The near-infrared light curve exhibits a sharp break at t approximate to 3.4 days in the observer frame which, if interpreted as being due to a jet, corresponds to an opening angle of theta(jet) approximate to 5 degrees The beaming-corrected gamma-ray energy is then E-gamma approximate to 2 x 10(50) erg, while the beaming-corrected kinetic energy is lower, E-K approximate to 10(49) erg, suggesting that GRB 120923A was a comparatively low kinetic energy event. We discuss the implications of this event for our understanding of the high-redshift population of GRBs and their identification. |
| WOS关键词 | GAMMA-RAY BURST ; AFTERGLOW LIGHT CURVES ; OPTICAL AFTERGLOWS ; BLAST WAVES ; X-SHOOTER ; SWIFT ; REIONIZATION ; ABSORPTION ; GALAXY ; BREAKS |
| 资助项目 | NASA[NAS 5-26555] ; NASA[NAS5-26555] ; NASA through Space Telescope Science Institute[GO12558] ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile[089.A-0067] ; DNRF ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant[EGGS-278202] ; UK STFC consolidated grant[ST/L000733/1] ; Instrument Center for Danish Astrophysics (IDA) ; Ramon y Cajal fellowship ; BBVA Foundation ; Spanish research project[AYA 2014-58381-P] ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS[XDB23000000] ; National Natural Science Foundation of China[11533003] ; Alexander von Humboldt Foundation of Germany ; TLS Tautenburg ; UK STFC[ST/N000757/1] ; [12A-394] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000445964000007 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; DNRF ; DNRF ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; UK STFC consolidated grant ; UK STFC consolidated grant ; Instrument Center for Danish Astrophysics (IDA) ; Instrument Center for Danish Astrophysics (IDA) ; Ramon y Cajal fellowship ; Ramon y Cajal fellowship ; BBVA Foundation ; BBVA Foundation ; Spanish research project ; Spanish research project ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Alexander von Humboldt Foundation of Germany ; Alexander von Humboldt Foundation of Germany ; TLS Tautenburg ; TLS Tautenburg ; UK STFC ; UK STFC ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; DNRF ; DNRF ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; UK STFC consolidated grant ; UK STFC consolidated grant ; Instrument Center for Danish Astrophysics (IDA) ; Instrument Center for Danish Astrophysics (IDA) ; Ramon y Cajal fellowship ; Ramon y Cajal fellowship ; BBVA Foundation ; BBVA Foundation ; Spanish research project ; Spanish research project ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Alexander von Humboldt Foundation of Germany ; Alexander von Humboldt Foundation of Germany ; TLS Tautenburg ; TLS Tautenburg ; UK STFC ; UK STFC ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; DNRF ; DNRF ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; UK STFC consolidated grant ; UK STFC consolidated grant ; Instrument Center for Danish Astrophysics (IDA) ; Instrument Center for Danish Astrophysics (IDA) ; Ramon y Cajal fellowship ; Ramon y Cajal fellowship ; BBVA Foundation ; BBVA Foundation ; Spanish research project ; Spanish research project ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Alexander von Humboldt Foundation of Germany ; Alexander von Humboldt Foundation of Germany ; TLS Tautenburg ; TLS Tautenburg ; UK STFC ; UK STFC ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Chile ; DNRF ; DNRF ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC Grant ; UK STFC consolidated grant ; UK STFC consolidated grant ; Instrument Center for Danish Astrophysics (IDA) ; Instrument Center for Danish Astrophysics (IDA) ; Ramon y Cajal fellowship ; Ramon y Cajal fellowship ; BBVA Foundation ; BBVA Foundation ; Spanish research project ; Spanish research project ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; One-Hundred-Talent Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; Strategic Priority Research Program Multi-wavelength Gravitational Wave Universe of the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Alexander von Humboldt Foundation of Germany ; Alexander von Humboldt Foundation of Germany ; TLS Tautenburg ; TLS Tautenburg ; UK STFC ; UK STFC |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/22902]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Tanvir, N. R. |
| 作者单位 | 1.Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England 2.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA 3.Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA 4.Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England 5.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England 6.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark 7.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA 8.NASA, Goddard Space Flight Ctr, Astrophys Sci Div, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA 9.Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA 10.Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany |
| 推荐引用方式 GB/T 7714 | Tanvir, N. R.,Laskar, T.,Levan, A. J.,et al. The Properties of GRB 120923A at a Spectroscopic Redshift of z approximate to 7.8[J]. ASTROPHYSICAL JOURNAL,2018,865(2):16. |
| APA | Tanvir, N. R..,Laskar, T..,Levan, A. J..,Perley, D. A..,Zabl, J..,...&Xu, D..(2018).The Properties of GRB 120923A at a Spectroscopic Redshift of z approximate to 7.8.ASTROPHYSICAL JOURNAL,865(2),16. |
| MLA | Tanvir, N. R.,et al."The Properties of GRB 120923A at a Spectroscopic Redshift of z approximate to 7.8".ASTROPHYSICAL JOURNAL 865.2(2018):16. |
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来源：国家天文台
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