Response of bare strange stars to energy input onto their surfaces

Details Response of bare strange stars to energy input onto their surfaces Response of bare strange stars to energy input onto their surfaces

2001-07-02

arxiv.org/abs/astro-ph/0107020v1

Astrophys.J. 559 (2001) L135

Astronomy and Astrophysics

Astrophysics

15 pages, 1 figure, submitted to ApJL

Scientific paper

10.1086/323881

We study numerically the thermal emission of $e^+e^-$ pairs from a bare strange star heated by energy input onto its surface; heating starts at some moment, and is steady afterwards. The thermal luminosity in $e^+e^-$ pairs increases to some constant value. The rise time and the steady thermal luminosity are evaluated. Both normal and colour superconducting states of strange quark matter are considered. The results are used to test the magnetar model of soft gamma-ray repeaters where the bursting activity is explained by fast decay of superstrong magnetic fields and heating of the strange star surface. It is shown that the rise times observed in typical bursts may be explained in this model only if strange quark matter is a superconductor with an energy gap of more that 1 MeV.

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