Study of Dark-Matter Admixed Neutron Stars using the Equation of State from the Rotational Curves of Galaxies

Understand

In this work, we employ the dark matter equations of state (DMEOSs) obtained from the rotational curves of galaxies as well as the fermionic DMEOS with m = 1.0 GeV to study the structure of darkmatter admixed neutron stars (DMANSs).

• Applying the equation of state in the Skyrme framework for the neutron matter (NM), we calculate the mass-radius relation for different DMANSs with various DMEOSs and central pressure of dark matter (DM) to NM ratios.
• Our results show that for some DMEOSs, the mass-radius relations are in agreement with new observations, e.g.
• EXO 1745-248, 4U 1608-52, and 4U 1820-30, which are inconsistent with the normal neutron stars.