19-23 September 2022
Banach Center IMPAN
Europe/Warsaw timezone

Stability of differentially rotating compact objects against a prompt collapse

20 Sep 2022, 17:10
20m
321 (Banach Center IMPAN)

321

Banach Center IMPAN

ul. Śniadeckich 8 00-656 Warszawa

Speaker

Paweł Szewczyk ( University of Warsaw, Astronomical Observatory )

Description

Numerical simulations have been an important method for studying complex astrophysical scenarios, such as supernova explosions, showing that the remnant of core-collapse supernova rotates differentially at the initial phase of evolution. For neutron stars, differential rotation allows for significantly larger masses than rigid rotation. In our work, we study the stability of those objects and look for the most massive stable neutron stars that can be produced in core-collapse supernova. I will present the results of our studies. For a polytropic equation of state, we have estimated the limit of stability against radial oscillations for a selected sample of configurations. We considered a wide range of parameters and found stable configurations even twice as massive as the most massive non-rotating configuration.

Presentation Materials

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