Eliminating the LIGO bounds on primordial black hole dark matter
| العنوان: | Eliminating the LIGO bounds on primordial black hole dark matter |
|---|---|
| المؤلفون: | Archil Kobakhidze, Céline Bœhm, Zachary S. C. Picker, Mairi Sakellariadou, Ciaran A. J. O'Hare |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, High Energy Physics - Theory, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Primordial black hole, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, LIGO, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), 0103 physical sciences, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | Primordial black holes (PBHs) in the mass range $(30$--$100)~M_{\odot}$ are interesting candidates for dark matter, as they sit in a narrow window between microlensing and cosmic microwave background constraints. There are however tight constraints from the binary merger rate observed by the LIGO and Virgo experiments. In deriving these constraints, PBHs were treated as point Schwarzschild masses, while the more careful analysis in an expanding universe we present here, leads to a time-dependent mass. This implies a stricter set of conditions for a black hole binary to form and means that black holes coalesce much more quickly than was previously calculated, namely well before the LIGO/Virgo's observed mergers. The observed binaries are those coalescing within galactic halos, with a merger rate consistent with data. This reopens the possibility for dark matter in the form of LIGO-mass PBHs. formatting + structure updated, and some arguments have been extended and slightly rewritten for clarity. no changes to the physics or conclusions |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdf96a6d889338997f33fc6a94afa8fa http://arxiv.org/abs/2008.10743 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fdf96a6d889338997f33fc6a94afa8fa |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |