Diagnosing magnetars with transient cooling

Details Diagnosing magnetars with transient cooling Diagnosing magnetars with transient cooling

2002-11-06

arxiv.org/abs/astro-ph/0211110v1

Astrophys.J. 580 (2002) L69-L72

Astronomy and Astrophysics

Astrophysics

9 pages, 1 eps figure

Scientific paper

10.1086/345402

Transient X-ray emission, with an approximate t^{-0.7} decay, was observed from SGR 1900+14 over 40 days following the the giant flare of 27 Aug 1998. We calculate in detail the diffusion of heat to the surface of a neutron star through an intense 10^{14}-10^{15} G magnetic field, following the release of magnetic energy in its outer layers. We show that the power law index, the fraction of burst energy in the afterglow, and the return to persistent emission can all be understood if the star is composed of normal baryonic material.

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