Is SAX J1808.4-3658 a Strange Star ?

Details Is SAX J1808.4-3658 a Strange Star ? Is SAX J1808.4-3658 a Strange Star ?

1999-05-16

arxiv.org/abs/hep-ph/9905356v2

Phys.Rev.Lett. 83 (1999) 3776-3779

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, Latex, 1 figure, corrected for some typos

Scientific paper

10.1103/PhysRevLett.83.3776

One of the most important questions in the study of compact objects is the nature of pulsars, including whether they are composed of $\beta$-stable nuclear matter or strange quark matter. Observations of the newly discovered millisecond X-ray pulsar \sax with the Rossi X-Ray Timing Explorer place firm constraint on the radius of the compact star. Comparing the mass - radius relation of \sax with the theoretical mass - radius relation for neutron stars and for strange stars, we find that a strange star model is more consistent with SAX J1808.4-3658, and suggest that it is a likely strange star candidate.

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