The Chandra HETGS Spectrum of GRB 020813: Evidence for Recent SN

Details The Chandra HETGS Spectrum of GRB 020813: Evidence for Recent SN The Chandra HETGS Spectrum of GRB 020813: Evidence for Recent SN

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.4401b&link_type=abstract

American Astronomical Society, HEAD meeting #7, #44.01; Bulletin of the American Astronomical Society, Vol. 35, p.655

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the detection of lines from light elements (Si, S, and Ca), and possibly Ni, in the Chandra HETGS spectrum taken ˜ 1 day after GRB 020813. These appear to be variable and seem to be well fit by a reflection model. Lines from Fe are not observed, indicating that a pre-cursor SN must have been recent. We discuss the significance and interpretation of the spectral features observed.
This research was supported in part by NASA contract NASW-4690.

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