Titol: Hyperons in neutron stars binary mergers

Lloc: Seminari del DAA. Edifici Investigació Jeroni Muñoz, planta quarta, a Burjassot.

Dia: dimarts 1 de juliol de 2025. Hora: 12:00.

Resum:

The coalescence of a binary system of neutron stars represents a perfect scenario to study hot and ultra-dense matter. Under these extreme conditions, exotic species such as hyperons may be present too. In this seminar I will speak about the influence that the appearance of hyperons have on the equation of state **(EoS)**, and consequently, the signatures they may leave* *in the observables measured from the astrophysical phenomena. In particular, I will focus on the signatures that come from the thermal behaviour of hyperons in matter. The presence of hyperons produces a significant drop of the thermal pressure **at the level of EOS**. This effect consequently induces a characteristic increase of the dominant postmerger gravitational-wave frequency by up to ∼ 150 Hz compared to purely nucleonic EoS models. **Other quantities like the mass ejecta and threshold mass are affected by the appearance of the hyperons too.