2020/09/30 by Ebrahim Hassani, H. Ebadi, Hossein Ebadi +3
Physics and Astronomy · #Astrophysics #Binary number #Binary star #Dark Matter and Cosmic Phenomena #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Physics #Star (game theory) #Star cluster #Star formation #Stars #Stellar evolution #Stellar, planetary, and galactic studies #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1093/mnras/stab256
15 pages, 7 Tables, 14 Figures, Accepted for publication in MNRAS
arxiv created 2021/01/27 · openalex publication_date 2021/01/27 · arxiv updated 2021/02/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
ABSTRACT The distribution of dark matter (DM) inside galaxies is not uniform. Near the central regions, its density is the highest. Then, it is logical to suppose that, inside galaxies, DM affects the physics of stars in central regions more than outer regions. Besides, current stellar evolutionary models did not consider DM effects in their assumptions. To consider DM effects, at first one must estimate how much DM a star contains. The capture rate (CR) of DM particles by individual stars was investigated already in the literature. In this work, we discuss how CR can be affected when stars are members of binary star systems (BSSs; instead of studying them individually). When a star is a member of a BSS, its speed changes periodically due to the elliptical motion around its companion star. In this work, we investigated CR by BSSs in different BSS configurations. In the end, we discussed observational signatures that can be attributed to the DM effects in BSSs.