Interior matter estimates of the X-ray pulsar in SAX J1808.4-3658 from mass-radius and rotation measurements

Details Interior matter estimates of the X-ray pulsar in SAX J1808.4-3658 from mass-radius and rotation measurements Interior matter estimates of the X-ray pulsar in SAX J1808.4-3658 from mass-radius and rotation measurements

2008-01-27

arxiv.org/abs/0801.4123v1

Astronomy and Astrophysics

Astrophysics

3 pages, 2 figures

Scientific paper

To constrain the equation of state of super-nuclear density matter and probe the interior composition of the X-ray pulsar in SAX J1808.4-3658. In our estimation, we consider both its persistent 2.49 ms X-ray pulsations discovered by Wijnands and van der Klis from using the Rossi X-ray Timing Explorer, which is interpreted to come from an accreting-powered millisecond X-ray pulsar in the low mass X-ray binaries, and the corresponding mass-radius data analyzed of the light curves of SAX J1808.4-3685 during its 1998 and 2005 outbursts by Leahy et al. from assuming a hot spot model where the X-rays are originated from the surface of the neutron star.

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