The Synchrotron-self-Compton Radiation Accompanying Shallow Decaying X-Ray Afterglow: the Case of GRB 940217
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.
- Publication:
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Chinese Journal of Astronomy and Astrophysics
- Pub Date:
- August 2007
- DOI:
- 10.1088/1009-9271/7/4/06
- arXiv:
- arXiv:astro-ph/0702106
- Bibcode:
- 2007ChJAA...7..509W
- Keywords:
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- gamma-rays: bursts;
- ISM: jets and outflows;
- radiation mechanisms: nonthermal;
- Astrophysics
- E-Print:
- 11 pages, including 1 figure and 1 table