XTE J1814-338 as a strange star admixed with bosonic dark matter

2025/08/31 by Yang, Shu-Hua, Weber, Fridolin
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2509.00656

Abstract

We show that the compact star XTE J1814-338 can be explained as a strange star admixed with self-interacting bosonic dark matter (BDM), provided the dark matter fraction exceeds approximately 70%. This interpretation leads to a robust constraint on the BDM particle mass: m_χ\lesssim 307(λ/π)^1/4 MeV (λ is the dimensionless coupling constant of the BDM). The result is independent of formation scenario and microphysical details and is falsifiable by future NICER and LIGO/Virgo observations.

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