Observability of Neutron Stars with Quarks

Details Observability of Neutron Stars with Quarks Observability of Neutron Stars with Quarks

2002-09-06

arxiv.org/abs/astro-ph/0209122v1

Nucl.Phys. A715 (2003) 835-838

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, uses espcrc1.sty (included)

Scientific paper

10.1016/S0375-9474(02)01514-2

Recent Chandra observations have raised expectations that the objects RX J185635-3754 and 3C58 are either bare strange quark stars or stars with extended quark cores. However, these observations can also be interpreted in terms of normal neutron stars. Essential requirements for either explanation are that they simultaneously account for the observed (i) spectral features (i.e., thermal or nonthermal, possible lines), (ii) bounds on the inferred mass (M) and radius (R), and (iii) the cooling curves (effective temperatures T and luminosities L vs. age). Compact stars offer the promise of delineating QCD at finite baryon density (Lattimer and Prakash, 2001) in a fashion complementary to relativistic heavy ion collider experiments, which largely address the finite temperature, but baryon poor regime.

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