AAS 203rd Meeting, January 2004
Session 95 HEAD I: Gamma-Ray Bursts
Division Special Session, Wednesday, January 7, 2004, 10:00-11:30am, Centennial I/II

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[95.02] Discrete X-ray Spectral Features in Gamma-ray Burst Afterglows

M. Sako (KIPAC/Stanford)

The detection of discrete X-ray spectral features during the afterglows of gamma-ray burst is an important and difficult measurement, which will undoubtedly provide indispensable clues to help us understand the physical nature of the burst progenitor star. Several interesting cases have been reported, but the reality of the detections as well as their identifications and interpretations remain rather controversial. I will review the current status of X-ray emission line detections in GRB afterglows, some of the existing models, and the prospects for detecting them with present and future observatories.

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.