The binaries of the NS-NS merging events

TL;DR

This paper examines neutron star merger events, highlighting evidence for asymmetric progenitors and discussing tensions in maximum neutron star mass estimates based on observational data.

Contribution

It provides new insights into the nature of NS-NS mergers, emphasizing the role of asymmetric systems and the implications for maximum NS mass.

Findings

Evidence suggests asymmetric systems as progenitors of GW170817.

Tension exists between maximum NS mass estimates and GW170817 data.

Data from NS mass distribution informs merger models.

Abstract

We discuss in this contribution some issues of the NS-NS merging events, emphasizing that the data and independent evidence gathered from NS mass distribution suggest an asymmetric system as the progenitor of GW170817. The issue of the maximum static NS mass (likely found in redback-black widow systems) is in tension with the value related to this particular event.