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arXiv · 2305.03085

Dark Matter-Induced Stellar Oscillations

Jeremy Sakstein·Ippocratis D. Saltas
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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 $l=1$. 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.

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Jeremy Sakstein, Ippocratis D. Saltas. 2023-05-04. Dark Matter-Induced Stellar Oscillations. https://arxiv.org/abs/2305.03085

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