Secondary component of gravitational-wave signal GW190814 as an anisotropic neutron star

Understand

The gravitational-wave signal GW190814 involves a compact object with mass $(2.50-2.67){\rm M}_\odot$ within the so-called low mass gap.

• As yet, a general consensus on its nature, being a black hole, a neutron star or an exotic star, has not been achieved.
• We investigate the possibility this compact object to be an anisotropic neutron star.
• Anisotropies in a neutron star core arise naturally by effects such as superfluidity, hyperons, strong magnetic fields and allow the maximum mass to exceed that of the ideally isotropic stars.