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arXiv · 1902.00929

GW170817 constraints on the properties of a neutron star in the presence of WIMP dark matter

Abdul Quddus·Grigorios Panotopoulos·Bharat Kumar·Shakeb Ahmad·S. K. Patra
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Abstract

The properties of a neutron star are studied in the presence of dark matter. We have considered a relatively light Weakly Interacting Massive Particle (WIMP) as a dark matter candidate with properties suggested by the results of the DAMA/LIBRA collaboration, realized for instance within the framework of the Next-to-Minimal Supersymmetric Standard Model. The dark matter particle interacts with the baryonic matter of a neutron star through Higgs bosons. The dark matter variables are essentially fixed using the results of the DAMA/LIBRA experiment, which are then used to build the Lagrangian density for the WIMP-nucleon interaction inside a neutron star. We have used the effective field theory motivated relativistic mean field model to study the equations-of-state in the presence of dark matter. The predicted equations-of-state are used in the Tolman-Oppenheimer-Volkoff equations to obtain the mass-radius relations, the moment of inertia, and effects of the tidal field on a neutron star. The calculated properties are compared with the corresponding data of the GW170817 event.

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Abdul Quddus, Grigorios Panotopoulos, Bharat Kumar, Shakeb Ahmad, S. K. Patra. 2019-10-10. GW170817 constraints on the properties of a neutron star in the presence of WIMP dark matter. https://doi.org/10.1088/1361-6471%2Fab9d36

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