X-ray Emission Lines in the Early Afterglows of Gamma-Ray Bursts

Details X-ray Emission Lines in the Early Afterglows of Gamma-Ray Bursts X-ray Emission Lines in the Early Afterglows of Gamma-Ray Bursts

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003astl...29..205k&link_type=abstract

Astronomy Letters, vol. 29, p. 205-213 (2003)

Astronomy and Astrophysics

Astronomy

5

Scientific paper

We computed the thermal time-dependent X-ray spectrum of a hot plasma in the vicinity of a gamma-ray burst (GRB). An allowance for time-dependent processes in a hot rarefied plasma is shown to strongly affect the observed spectrum. These computations can give an alternative explanation for the observed X-ray emission lines in the early afterglows of GRBs (e.g., GRB 011211). Our technique allows the GRB collimation angle and the environment clumpiness parameters to be independently constrained.

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