1E 1207.4-5209: a low-mass bare strange star?

Details 1E 1207.4-5209: a low-mass bare strange star? 1E 1207.4-5209: a low-mass bare strange star?

2004-02-27

arxiv.org/abs/astro-ph/0402659v2

Mon.Not.Roy.Astron.Soc. 356 (2005) 359-370

Astronomy and Astrophysics

Astrophysics

13 pages, 4 figures, 1 table; changed significantly, a section "quark matter phenomenology" added; accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08437.x

Both rotation- and accretion-powered low-mass bare strange stars are studied, the astrophysical appearances of which are especially focused. It is suggested that low-mass bare strange stars, with weaker ferromagnetic fields than that of normal pulsars, could result from accretion-induced collapses (AIC) of white dwarfs. According to its peculiar timing behavior, we propose that the radio-quiet object, 1E 1207.4-5209, could be a low-mass bare strange star with polar surface magnetic field ~ 6 x 10^10 G and a few kilometers in radius. The low-mass bare strange star idea is helpful to distinguish neutron and strange stars, and is testable by imaging pulsar-like stars with the future Constellation-X telescope.

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