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Dark matter admixed neutron star as a possible compact component in the GW190814 merger event

H. C. Das*, Ankit Kumar, and S. K. Patra

  • Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India and Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India

  • *harish.d@iopb.res.in
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Phys. Rev. D 104, 063028 – Published 16 September, 2021

DOI: https://doi.org/10.1103/PhysRevD.104.063028

Abstract

We put constraints on the secondary component of GW190814 by analyzing the observational data of the event. The relativistic mean-field models are used to calculate the mass-radius profile and tidal deformability of the compact object, considering it as a massive neutron star with the presence of dark matter particles inside it. With the increase of dark matter percentage, the maximum mass, radius, and tidal deformability of the neutron star decreases. We observe that the predicted properties are well consistent with GW190814 observational data, suggesting the possibility of a dark matter admixed neutron star if the underlying nuclear equation of state is sufficiently stiff.

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Phys. Rev. D 104, 063028– Published 16 September, 2021
  • Received 19 April 2021
  • Accepted 12 August 2021
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