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- W2183632318 abstract "We provide a detailed analysis of how bosonic dark matter condensates interact with compact stars, extending significantly the results of a recent Letter. We focus on bosonic fields with mass $m_B$, such as axions, axion-like candidates and hidden photons. Self-gravitating bosonic fields generically form breathing configurations, where both the spacetime geometry and the field oscillate, and can interact and cluster at the center of stars. We construct stellar configurations formed by a perfect fluid and a bosonic condensate, and which may describe the late stages of dark-matter accretion onto stars, in dark matter-rich environments. These composite stars oscillate at a frequency which is a multiple of $f=2.5times 10^{14},left(m_{B}c^2/eVright),{rm Hz}$. Using perturbative analysis and Numerical Relativity techniques, we show that these stars are generically stable, and we provide criteria for instability. Our results also indicate that the growth of the dark matter core is halted close to the Chandrasekhar limit. We thus dispel a myth concerning dark matter accretion by stars: dark mater accretion does not necessarily lead to the destruction of the star, nor to collapse to a black hole. Finally, we argue that stars with long-lived bosonic cores may also develop in other theories with effective mass couplings, such as (massless) scalar-tensor theories." @default.
- W2183632318 created "2016-06-24" @default.
- W2183632318 creator A5012871089 @default.
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- W2183632318 creator A5050997098 @default.
- W2183632318 creator A5051650336 @default.
- W2183632318 date "2016-02-16" @default.
- W2183632318 modified "2023-10-16" @default.
- W2183632318 title "Interaction between bosonic dark matter and stars" @default.
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