Accretion of Dark Matter by Stars

Richard Brito, Vitor Cardoso, Hirotada Okawa

研究成果: Article査読

35 被引用数 (Scopus)

抄録

Searches for dark matter imprints are one of the most active areas of current research. We focus here on light fields with mass mB, such as axions and axionlike candidates. Using perturbative techniques and full-blown nonlinear numerical relativity methods, we show the following. (i) Dark matter can pile up in the center of stars, leading to configurations and geometries oscillating with a frequency that is a multiple of f=2.5×1014(mBc2/eV)Hz. These configurations are stable throughout most of the parameter space, and arise out of credible mechanisms for dark-matter capture. Stars with bosonic cores may also develop in other theories with effective mass couplings, such as (massless) scalar-tensor theories. We also show that (ii) collapse of the host star to a black hole is avoided by efficient gravitational cooling mechanisms.

本文言語English
論文番号111301
ジャーナルPhysical Review Letters
115
11
DOI
出版ステータスPublished - 2015 9 9

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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