| The Synchrotron-self-Compton Radiation Accompanying Shallow Decaying X-Ray Afterglow： the Case of GRB 940217 |
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| 作者姓名： | Da-Ming Wei Yi-Zhong Fan |
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| 作者单位： | Da-Ming Wei1，2，3 and Yi-Zhong Fan1，2，4，5 1 Purple Mountain Observatory，Chinese Academy of Sciences，Nanjing 210008; 2 National Astronomical Observatories，Chinese Academy of Sciences，Beijing，100012 3 Joint Center for Particle Nuclear Physics and Cosmology of Purple Mountain Observatory -Nanjing University，Nanjing 210008 4 The Racah Inst. of Physics，Hebrew University，Jerusalem 91904，Israel 5 Golda Meir Fellow |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | High energy emission (> tens MeV) of Gamma-Ray Bursts (GRBs) provides an important clue on the physical processes occurring in GRBs that may be correlated with the GRB early afterglow. A shallow decline phase has been well identified in about half of Swift Gamma-ray Burst X-ray afterglows. The widely considered interpretation involves a significant energy injection and possibly time-evolving shock parameter(s). We calculate the synchrotron-self-Compton (SSC) radiation of such an external forward shock and show that it could explain the well-known long term high energy (i.e., tens MeV to GeV) afterglow of GRB 940217. We propose that cooperation of Swift and GLAST will help to reveal the nature of GRBs.
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| 关 键 词： | gamma-rays: bursts — ISM: jets and outflows — radiation mechanisms: non-thermal |
| 修稿时间： | 2007-02-07 |
The Synchrotron-self-Compton Radiation Accompanying Shallow Decaying X-Ray Afterglow: the Case of GRB 940217 |
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| Da-Ming Wei Yi-Zhong Fan.The Synchrotron-self-Compton Radiation Accompanying Shallow Decaying X-Ray Afterglow: the Case of GRB 940217[J].Chinese Journal of Astronomy and Astrophysics,2007,7(4):509-515. |
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| Authors: | Da-Ming Wei Yi-Zhong Fan |
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| Abstract: | High energy emission (> tens MeV) of Gamma-Ray Bursts (GRBs) provides an important clue on the physical processes occurring in GRBs that may be correlated with the GRB early afterglow. A shallow decline phase has been well identified in about half of Swift Gamma-ray Burst X-ray afterglows. The widely considered interpretation involves a significant energy injection and possibly time-evolving shock parameter(s). We calculate the synchrotron-self-Compton (SSC) radiation of such an external forward shock and show that it could explain the well-known long term high energy (i.e., tens MeV to GeV) afterglow of GRB 940217. We propose that cooperation of Swift and GLAST will help to reveal the nature of GRBs. |
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| Keywords: | gamma-rays: bursts - ISM: jets and outflows - radiation mechanisms: non-thermal |
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