Ultralight bosonic dark matter in white dwarfs and potential observational consequences
| العنوان: | Ultralight bosonic dark matter in white dwarfs and potential observational consequences |
|---|---|
| المؤلفون: | Nicolas Sanchis-Gual, Paula Izquierdo |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Condensed Matter::Quantum Gases, Astrophysics - Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, General Relativity and Quantum Cosmology |
| الوصف: | Fluid and ultralight bosonic dark matter can interact through gravity to form stable fermion-boson stars, which are static and regular mixed solutions of the Einstein-Euler-(complex, massive) Klein-Gordon system. In this work we study the dynamical formation via gravitational cooling of a spherical mixed white-dwarf--boson star, whose properties depend on the boson particle mass and the mass of the boson star. Due to the accretion of bosonic dark matter, the white dwarf migrates to a denser and more compact object with a boson star core, thus modifying its gravitational redshift and altering the electromagnetic radiation emitted from the photosphere. We discuss the implications of the changes in the gravitational redshift that in principle could be produced by any type of dark matter and that might lead to small discrepancies in the estimation of masses and radii derived from white dwarf observations. 13 pages |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ff41fcd1c24fd86c047aa500c36e154 http://arxiv.org/abs/2202.00434 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2ff41fcd1c24fd86c047aa500c36e154 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |