Open Access1E 1207.4−5209: a low‐mass bare strange star?
Author(s) -
Xu R. X.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08437.x
Subject(s) - physics , neutron star , astrophysics , quark star , pulsar , white dwarf , astronomy , accretion (finance) , stars , millisecond pulsar , compact star , low mass , exotic star , pulsar planet , strange matter , binary pulsar
Both rotation‐ and accretion‐powered low‐mass bare strange stars are studied, with particular regard to their astrophysical appearance. It is suggested that low‐mass bare strange stars, with weaker ferromagnetic fields than that of normal pulsars, could result from the accretion‐induced collapse of white dwarfs. According to its peculiar timing behaviour, we propose that the radio‐quiet object, 1E 1207.4−5209, could be a low‐mass bare strange star with a polar surface magnetic field of ∼6 × 10 10 G and a radius of a few kilometres. The low‐mass bare strange star idea is helpful in distinguishing neutron and strange stars, and is testable by imaging pulsar‐like stars with the future Constellation‐X telescope.