arXiv:astro-ph/0210259·v3·Astrophysics
Upper limit on the mass of RX J1856.5--3754 as a possible quark star
Kazunori Kohri🇯🇵 · Kei Iida🇯🇵 · Katsuhiko Sato🇯🇵
Abstract
Recent deep Chandra LETG+HRC-S observations suggest the possibility that RX J1856.5--3754 is a compact star whose radiation radius is 3.8--8.2 km. In this paper, we systematically calculate the mass-radius relations of quark stars within the bag model. Assuming that RX J1856.5--3754 is a pure quark star, we derive an upper limit on its mass for various sets of the bag-model parameters.
Comments: 16 pages, 10 figures, to appear in Prog. Theor. Phys