Dark Matter-Induced Stellar Oscillations
Abstract
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 . 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.
Cite
@article{arxiv.2305.03085,
title = {Dark Matter-Induced Stellar Oscillations},
author = {Jeremy Sakstein and Ippocratis D. Saltas},
journal= {arXiv preprint arXiv:2305.03085},
year = {2023}
}
Comments
5 pages, no figures. Comments welcome. A reproduction package for our numerical analysis is available here: https://zenodo.org/record/7894030