A&A 387, 710-713 (2002)
DOI: 10.1051/0004-6361:20020395

The surface electric field of bare strange stars

J. Hu¹ and R. X. Xu<sup>2, 1

1</sup>  Center for Astrophysics and Physics Department, Tsinghua University, Beijing 100084, PR China
²  School of Physics, Peking University, Beijing 100871, PR China

(Received 7 January 2002 / Accepted 4 March 2002 )

Abstract
The surface electric characteristics of bare strange stars are investigated with the inclusion of boundary effects. The thickness of the electron layer where pairs can be spontaneously created is calculated as a function of the bag parameters. We find that previous estimates are representative for bag parameters within a rather wide range, and therefore our results favor the thermal radiation mechanism of bare strange stars advanced by V. V. Usov.

Key words: radiation mechanisms: thermal -- elementary particles -- stars: neutron

Offprint request: R. X. Xu, rxxu@bac.pku.edu.cn

© ESO 2002

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