Mixed Phase in Compact Starts : M-R relations and radial oscillations

Details Mixed Phase in Compact Starts : M-R relations and radial oscillations Mixed Phase in Compact Starts : M-R relations and radial oscillations

2003-12-20

arxiv.org/abs/hep-ph/0312297v1

Int.J.Mod.Phys. D13 (2004) 1197-1206

Physics

High Energy Physics

High Energy Physics - Phenomenology

guest contribution at Int. Workshop on Astronomy & Relativistic Astrophysics (IWARA 03)held at Olinda-PE (Brazil) from Oct. 12

Scientific paper

10.1142/S0218271804005316

It is believed that quark stars or neutron stars with mixed phase in the core have smaller radii compared to ordinary compact stars. With the recent observation of several low radius objects, typically a radius of $<10 Km.$ for star of mass $< 1M_0$ in low mass X-ray binaries (LMXB), it has become very important to understand the nature of these objects. An accurate determination of mass-radius relationship of these objects provide us with a physical laboratory to study the composition of high density matter and the nature of phase transition. We study the effect of quark and nuclear matter mixed phase on mass radius relationship and radial oscillations of neutron stars. We find that the effect of the mixed phase is to decrease the maximum mass of a stable neutron star and to decrease the radial frequencies .

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