Dark Matter or Regular Matter in Neutron Stars? How to tell the difference from the coalescence of compact objects

ORAL

Abstract

The mirror Twin Higgs model is a candidate for strongly self-interacting dark matter. Since the model is a nearly identical copy of the Standard Model (SM), one expects that this model acquires interactions similar to the SM. Therefore, a neutron star entirely composed of mirror dark matter is possible. Our previous study showed mirror neutron stars are distinguishable from SM neutron stars. In this presentation, I will focus on two scenarios that produce a mirror matter admixed neutron star: mirror matter captured by a neutron star and the coalescence of a mirror neutron star and a SM neutron star. I will discuss the properties of the admixed star and the distinguishability from the observation perspective.

*H.T. and N.Y. acknowledge financial support through NSF grants No. PHY-1759615, PHY-1949838 and PHY-2207650. M.H. was supported in part by the National Science Foundation (NSF) within the framework of the MUSES collaboration, under grant number OAC-2103680. The research of DC was supported in part by a Discovery Grant from the Natural Sciences and Engineering Research Council of Canada, the Canada Research Chair program, the Alfred P. Sloan Foundation, the Ontario Early Researcher Award, and the University of Toronto McLean Award. J.N.H. acknowledges financial support by the US-DOE Nuclear Science Grant No. DESC0020633. E.D. acknowledges financial support from Internship Grant Funding – Berea College Internship Program. This material is based upon work supported by the National Science Foundation and the Department of Defense under Grant PHY-1950744. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily

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Presenters

  • Hung Tan

    • University of Illinois at Urbana-Champai

Authors

  • Maurício Hippert

    • University of Illinois at Urbana-Champaign

  • Emily Dillingham

    • Berea College

  • Hung Tan

    • University of Illinois at Urbana-Champai

  • David R Curtin

    • Univ of Toronto

  • Jacquelyn Noronha-Hostler

    • University of Illinois at Urbana-Champaign
    • University of Illinois at Urbana-Champai

  • Nicolas Yunes

    • University of Illinois at Urbana-Champai
    • University of Illinois Urbana Champaign