The X-ray afterglow flat segment in short GRB 051221A: Energy injection from a millisecond magnetar?

The flat segment, lasting ∼104 s, in the X-ray afterglow of GRB 051221A represents the first clear case of strong energy injection in the external shock of a short gamma-ray burst (GRB) afterglow. In this work, we show that a millisecond pulsar with a dipole magnetic field ∼1014 Gauss could well acc...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society. Letters Vol. 372; no. 1; pp. L19 - L22
Main Authors Fan, Yi-Zhong, Xu, Dong
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Ltd 01.10.2006
Blackwell Publishing Ltd
Subjects
gamma-rays: bursts
ISM: jets and outflows
radiation mechanisms: non-thermal
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Summary:The flat segment, lasting ∼104 s, in the X-ray afterglow of GRB 051221A represents the first clear case of strong energy injection in the external shock of a short gamma-ray burst (GRB) afterglow. In this work, we show that a millisecond pulsar with a dipole magnetic field ∼1014 Gauss could well account for that energy injection. The good quality X-ray flat segment thus suggests that the central engine of this short burst may be a millisecond magnetar.
Bibliography:istex:13FFBF66F963EC4E8CE8F1623ECB4D3449BE5484
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ISSN:1745-3925
1745-3933
DOI:10.1111/j.1745-3933.2006.00217.x