Volume 474 - 2nd Training School and General Meeting of the COST Action COSMIC WISPers (CA21106) (COSMICWISPers2024) - Wg2
Searching for Ultra Light Dark Matter soliton through GWs
S. Gasparotto
Full text: pdf
Pre-published on: February 19, 2025
Published on: —
Abstract
Ultralight Dark Matter (ULDM) offers an alternative to cold dark matter, characterized by wavelike behavior on galactic scales. This contribution summarizes our work~\cite{Blas:2024duy} on how solitonic cores induced by ULDM affect gravitational waves (GWs), enabling their detection through next-generation observatories like LISA, Einstein Telescope and Cosmic Explorer. We show that continuous GWs from spinning neutron stars near the Galactic Center (GC) can probe solitons for \(m \lesssim 10^{-22}\, \mathrm{eV}\) and surpass current constraints on the ULDM couplings to the Standard Model for masses \(m \lesssim 10^{-20}\, \mathrm{eV}\). Additionally, GW modulation could reveal solitons in extragalactic systems, particularly in more massive halos, highlighting the broad potential of GW-based methods for uncovering ULDM properties.
DOI: https://doi.org/10.22323/1.474.0016
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