The lifetime of binary neutron star merger remnants

Understand

Although the main features of the evolution of binary neutron star systems are now well established, many details are still subject to debate, especially regarding the post-merger phase.

• In particular, the lifetime of the hyper-massive neutron stars formed after the merger is very hard to predict.
• In this work, we provide a simple analytic relation for the lifetime of the merger remnant as function of the initial mass of the neutron stars.
• This relation results from a joint fit of data from observational evidence and from various numerical simulations.