Extended Gravity Description for the GW190814 Supermassive Neutron Star

Understand

Very recently a compact object with a mass in the range $2.50\div 2.67\, M_{\odot}$ has been discovered via gravitational waves detection of a compact binary coalescence.

• The mass of this object makes it among the heaviest neutron star never detected or the lightest black hole ever observed.
• Here we show that a neutron star with this observed mass, can be consistently explained with the mass-radius relation obtained by Extended Theories of Gravity.
• Furthermore, equations of state, consistent with LIGO observational constraints, are adopted.