FERMI OBSERVATIONS OF HIGH-ENERGY GAMMA-RAY EMISSION FROM GRB 090217A
文献类型：期刊论文
| 作者 | Ackermann, M.1,2; Ajello, M.1,2; Baldini, L.3; Ballet, J.4; Barbiellini, G.5,6; Baring, M. G.7; Bastieri, D.8,9; Bechtol, K.1,2; Bellazzini, R.3; Berenji, B.1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2010-07-10 |
| 卷号 | 717期号:2页码:L127-L132 |
| ISSN号 | 2041-8205 |
| 关键词 | gamma-ray burst: individual (GRB090217A) |
| 英文摘要 | The Fermi observatory is advancing our knowledge of gamma-ray bursts (GRBs) through pioneering observations at high energies, covering more than seven decades in energy with the two on-board detectors, the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). Here, we report on the observation of the long GRB 090217A which triggered the GBM and has been detected by the LAT with a significance greater than 9 sigma. We present the GBM and LAT observations and on-ground analyses, including the time-resolved spectra and the study of the temporal profile from 8 keV up to similar to 1 GeV. All spectra are well reproduced by a Band model. We compare these observations to the first two LAT-detected, long bursts GRB 080825C and GRB 080916C. These bursts were found to have time-dependent spectra and exhibited a delayed onset of the high-energy emission, which are not observed in the case of GRB 090217A. We discuss some theoretical implications for the high-energy emission of GRBs. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SYNCHROTRON SHOCK MODEL ; LARGE-AREA TELESCOPE ; SPECTRAL COMPONENT ; BURST ; PROMPT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279430700011 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1197]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA 2.Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA 3.Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy 4.Univ Paris Diderot, Lab AIM, CEA IRFU, CNRS,Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France 5.Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy 6.Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy 7.Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA 8.Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy 9.Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy 10.Univ Alabama, Ctr Space Plasma & Aeron Res CSPAR, Huntsville, AL 35899 USA |
| 推荐引用方式 GB/T 7714 | Ackermann, M.,Ajello, M.,Baldini, L.,et al. FERMI OBSERVATIONS OF HIGH-ENERGY GAMMA-RAY EMISSION FROM GRB 090217A[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,717(2):L127-L132. |
| APA | Ackermann, M..,Ajello, M..,Baldini, L..,Ballet, J..,Barbiellini, G..,...&Ziegler, M..(2010).FERMI OBSERVATIONS OF HIGH-ENERGY GAMMA-RAY EMISSION FROM GRB 090217A.ASTROPHYSICAL JOURNAL LETTERS,717(2),L127-L132. |
| MLA | Ackermann, M.,et al."FERMI OBSERVATIONS OF HIGH-ENERGY GAMMA-RAY EMISSION FROM GRB 090217A".ASTROPHYSICAL JOURNAL LETTERS 717.2(2010):L127-L132. |
入库方式： OAI收割
来源：紫金山天文台
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