Dark Matter-Induced Stellar Oscillations

Autor:	Sakstein, Jeremy, Saltas, Ippocratis D.
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Solar and Stellar Astrophysics General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
Popis:	It has been hypothesized that dark matter is comprised of ultra-light bosons whose collective phenomena can be described as a scalar field undergoing coherent oscillations. Examples include axion and fuzzy dark matter models. In this ultra-light dark matter scenario, the harmonic variation in the field's energy-momentum tensor sources an oscillating component of the gravitational potential that we show can resonantly-excite stellar oscillations. A mathematical framework for predicting the amplitude of these oscillations is developed, which reveals that ultra-light dark matter predominantly excites p-modes of degree $l=1$. An investigation of resonantly-excited solar oscillations is presented, from which we conclude that dark matter-induced oscillations of the Sun are likely undetectable. We discuss prospects for constraining ultra-light dark matter using other stellar objects. Comment: 5 pages, no figures. Comments welcome. A reproduction package for our numerical analysis is available here: https://zenodo.org/record/7894030
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.03085 Zobrazit plný text záznamu View this record from Arxiv