A Chandra Observation of the Neutron Star X-Ray Transient XTE J2123-058 in Quiescence

Details A Chandra Observation of the Neutron Star X-Ray Transient XTE J2123-058 in Quiescence A Chandra Observation of the Neutron Star X-Ray Transient XTE J2123-058 in Quiescence

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.5313t&link_type=abstract

American Astronomical Society Meeting 203, #53.13; Bulletin of the American Astronomical Society, Vol. 35, p.1293

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Over the past few years, the X-ray sensitivities of Chandra and XMM-Newton have greatly improved our ablility to study quiescent low-mass X-ray binary neutron star transients. In quiescence, these systems are faint, with typical luminosities of 1E32 to 1E33 erg/s, and, in most cases, the energy spectra have a thermal component that is thought to be blackbody emission from the neutron star surface. Quiescent X-ray measurements are important for placing constraints on neutron star cooling, understanding differences between neutron stars and black holes at low luminosities, comparing millisecond X-ray pulsars to neutron stars without pulsations, and possibly constraining the neutron star radius. We will report on the results of a Chandra observation of XTE J2123-058. This neutron star transient is an especially good target as the neutron star mass and source distance are relatively well-constrained, and the level of extinction is low.
JAT acknowledges partial support from Chandra award number GO2-3051X issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-39073.

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