SÉMINAIRE DU GRECO
"Prompt Merger Collapse and the Maximum Mass of Neutron Stars" 

Thomas Baumgarte 

The maximum allowed mass of neutron stars depends on the equation of state. Observational constraints on the maximum mass therefore provide important information about the properties of matter at nuclear densities. A related quantity is the threshold mass, the mass above which the merger of binary neutron stars leads to prompt collapse to a black hole. In this talk I will review these concepts, and will present new numerical results that suggest a tight correlation between the ratio of these two masses and the stiffness of the equation of state. I will also use simple polytropic models that illustrate and explain the qualitative features of these findings. Finally I will speculate on how this correlation can be used to derive constraints on the maximum allowed mass from future gravitational wave observations.


mardi 3 décembre 2013  11:00 Salle des séminaires François Arago, Institut d'Astrophysique de Paris 
