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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2412.07953 |
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| _version_ | 1866911145189703680 |
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| author | Diks, Jared Ilie, Cosmin |
| author_facet | Diks, Jared Ilie, Cosmin |
| contents | In this work we explore the potential for Neutron Stars (NSs) at the Galactic center and Population~III stars to constrain bosonic Asymmetric Dark Matter (ADM). We demonstrate that for NSs in an environment of sufficiently high DM density ($ρ_χ\gtrsim10^{9}\text{GeV/cm}^3$), the effects of both multiscatter capture and DM evaporation cannot be neglected. Conversely, for Pop~III stars, we find they are excellent at probing low-mass ADM. For instance, the most easily observable Population III stars could be highly effective at constraining high-$σ$ low-$m_χ$ DM, maintaining efficacy below $m_χ=10^{-15}\text{GeV}$ (assuming a Bose Einstein Condensate(BEC) forms) thanks to their far lower value of $m_χ$ at which capture saturates to the geometric limit. Finally, we derive closed-form approximations for the evaporation rate of DM from arbitrary polytropic objects and from DM particles in a BEC state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_07953 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Constraining Asymmetric DM Properties by Black Hole Formation in Neutron Stars and Population III Stars Diks, Jared Ilie, Cosmin Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology In this work we explore the potential for Neutron Stars (NSs) at the Galactic center and Population~III stars to constrain bosonic Asymmetric Dark Matter (ADM). We demonstrate that for NSs in an environment of sufficiently high DM density ($ρ_χ\gtrsim10^{9}\text{GeV/cm}^3$), the effects of both multiscatter capture and DM evaporation cannot be neglected. Conversely, for Pop~III stars, we find they are excellent at probing low-mass ADM. For instance, the most easily observable Population III stars could be highly effective at constraining high-$σ$ low-$m_χ$ DM, maintaining efficacy below $m_χ=10^{-15}\text{GeV}$ (assuming a Bose Einstein Condensate(BEC) forms) thanks to their far lower value of $m_χ$ at which capture saturates to the geometric limit. Finally, we derive closed-form approximations for the evaporation rate of DM from arbitrary polytropic objects and from DM particles in a BEC state. |
| title | Constraining Asymmetric DM Properties by Black Hole Formation in Neutron Stars and Population III Stars |
| topic | Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.07953 |