Fe Kα emission from a decaying magnetar model of gamma-ray bursts

M. J. Rees, P. Mészáros

Research output: Contribution to journalArticlepeer-review

87 Scopus citations


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) postburst 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.

Original languageEnglish (US)
Pages (from-to)L73-L75
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - Dec 20 2000

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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