Solid Quark Stars?
Astrophysics
2009-11-07 v2 High Energy Physics - Phenomenology
Abstract
It is conjectured that cold quark matter with much high baryon density could be in a solid state, and strange stars with low temperatures should thus be solid stars. The speculation could be close to the truth if no peculiar polarization of thermal X-ray emission (in, e.g., RXJ1856), or no gravitational wave in post-glitch phases, is detected in future advanced facilities, or if spin frequencies beyond the critical ones limited by r-mode instability are discovered. The shear modulus of solid quark matter could be ~ 10^{32} erg/cm^3 if the kHz QPOs observed are relevant to the eigenvalues of the center star oscillations.
Cite
@article{arxiv.astro-ph/0302165,
title = {Solid Quark Stars?},
author = {R. X. Xu},
journal= {arXiv preprint arXiv:astro-ph/0302165},
year = {2009}
}
Comments
Revised significantly, ApJL accepted, or at http://vega.bac.pku.edu.cn/~rxxu/publications/index_P.htm