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Title: Gravitational effects of condensate dark matter on compact stellar objects

Abstract

We study the gravitational effect of non-self-annihilating dark matter on compact stellar objects. The self-interaction of condensate dark matter can give high accretion rate of dark matter onto stars. Phase transition to condensation state takes place when the dark matter density exceeds the critical value. A compact degenerate dark matter core is developed and alter the structure and stability of the stellar objects. Condensate dark matter admixed neutron stars is studied through the two-fluid TOV equation. The existence of condensate dark matter deforms the mass-radius relation of neutron stars and lower their maximum baryonic masses and radii. The possible effects on the Gamma-ray Burst rate in high redshift are discussed.

Authors:
; ;  [1]
  1. Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong (China)
Publication Date:
OSTI Identifier:
22279640
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2012; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; BARYONS; COSMIC GAMMA BURSTS; COSMOLOGY; DENSITY; MASS; NEUTRON STARS; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; RED SHIFT; STAR ACCRETION

Citation Formats

Li, X.Y., Wang, F.Y., and Cheng, K.S., E-mail: lixinyu@connect.hku.hk, E-mail: fayinwang@gmail.com, E-mail: hrspksc@hku.hk. Gravitational effects of condensate dark matter on compact stellar objects. United States: N. p., 2012. Web. doi:10.1088/1475-7516/2012/10/031.
Li, X.Y., Wang, F.Y., & Cheng, K.S., E-mail: lixinyu@connect.hku.hk, E-mail: fayinwang@gmail.com, E-mail: hrspksc@hku.hk. Gravitational effects of condensate dark matter on compact stellar objects. United States. doi:10.1088/1475-7516/2012/10/031.
Li, X.Y., Wang, F.Y., and Cheng, K.S., E-mail: lixinyu@connect.hku.hk, E-mail: fayinwang@gmail.com, E-mail: hrspksc@hku.hk. 2012. "Gravitational effects of condensate dark matter on compact stellar objects". United States. doi:10.1088/1475-7516/2012/10/031.
@article{osti_22279640,
title = {Gravitational effects of condensate dark matter on compact stellar objects},
author = {Li, X.Y. and Wang, F.Y. and Cheng, K.S., E-mail: lixinyu@connect.hku.hk, E-mail: fayinwang@gmail.com, E-mail: hrspksc@hku.hk},
abstractNote = {We study the gravitational effect of non-self-annihilating dark matter on compact stellar objects. The self-interaction of condensate dark matter can give high accretion rate of dark matter onto stars. Phase transition to condensation state takes place when the dark matter density exceeds the critical value. A compact degenerate dark matter core is developed and alter the structure and stability of the stellar objects. Condensate dark matter admixed neutron stars is studied through the two-fluid TOV equation. The existence of condensate dark matter deforms the mass-radius relation of neutron stars and lower their maximum baryonic masses and radii. The possible effects on the Gamma-ray Burst rate in high redshift are discussed.},
doi = {10.1088/1475-7516/2012/10/031},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2012,
place = {United States},
year = 2012,
month =
}
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