Short-living supermassive magnetar model for the early X-ray flares following short GRBs

Details Short-living supermassive magnetar model for the early X-ray flares following short GRBs Short-living supermassive magnetar model for the early X-ray flares following short GRBs

2005-12-30

arxiv.org/abs/astro-ph/0512646v5

Chin. J. Astron. Astrophys.6:513-516, 2006

Astronomy and Astrophysics

Astrophysics

The final version. Possible mechanisms giving rise to multiple flares in the magnetar wind model have been discussed

Scientific paper

10.1088/1009-9271/6/5/01

We suggest a short-living supermassive magnetar model to account for the X-ray flares following short $\gamma-$ray bursts. In this model, the central engine of the short $\gamma-$ray bursts is a supermassive millisecond magnetar. The X-ray flares are powered by the dipole radiation of the magnetar. When the magnetar has lost a significant part of its angular momentum, it collapses to a black hole and the X-ray flares disappear abruptly. Two important predictions of this model are (i) X-ray flares much more energetic than that detected in GRB 050724 may be detectable in the coming months and years by the XRT onboard {\it Swift}. (ii) The short GRBs with X-ray flares may occur outside of their host galaxy.

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