Iron K-alpha Emission from a Decaying Magnetar Model of Gamma-Ray Bursts

Details Iron K-alpha Emission from a Decaying Magnetar Model of Gamma-Ray Bursts Iron K-alpha Emission from a Decaying Magnetar Model of Gamma-Ray Bursts

2000-10-13

arxiv.org/abs/astro-ph/0010258v1

Astrophys.J. 545 (2000) L73-L75

Astronomy and Astrophysics

Astrophysics

Ap.J. Letters, accepted; revised version with added comments on GRB 000214; aaspp4, 7 pages

Scientific paper

10.1086/317882

The recent report of X-ray Fe features in the afterglow of the gamma-ray burst GRB 991216 may provide important clues for identifying the nature of its progenitor and constraining the burst mechanism. We argue that the strong line emission can be attributed to the interaction of a continuing (but decaying) post-burst relativistic outflow from the central engine with the progenitor stellar envelope at distances less than a light-hour. Only a small mass of Fe is then required, which could have been readily produced by the star itself.

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