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

M. J. Rees; P. Mészáros

doi:10.1086/317882

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

M. J. Rees, P. Mészáros

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Abstract

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 language	English (US)
Pages (from-to)	L73-L75
Journal	Astrophysical Journal
Volume	545
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/317882
State	Published - Dec 20 2000

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/317882

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title = "Fe Kα emission from a decaying magnetar model of gamma-ray bursts",

abstract = "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.",

author = "Rees, {M. J.} and P. M{\'e}sz{\'a}ros",

note = "Funding Information: This research has been supported by NASA grant NAG5-9192, the Guggenheim Foundation, the Sackler Foundation, NSF grant PHY 94-07194, and the Royal Society. We are grateful to A. C. Fabian, L. Piro, and a referee for useful comments.",

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AU - Mészáros, P.

N1 - Funding Information: This research has been supported by NASA grant NAG5-9192, the Guggenheim Foundation, the Sackler Foundation, NSF grant PHY 94-07194, and the Royal Society. We are grateful to A. C. Fabian, L. Piro, and a referee for useful comments.

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N2 - 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.

AB - 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.

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ER -

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

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