Conferències al DAA. Xerrada a càrrec de l'investigador Camilo Posada, de l' Institute of Physics, Research Centre of Theoretical Physics and Astrophysics, Silesian University in Opava (Rep. Txeca). Lloc: Seminari del Departament d'Astronomia i Astrofísica, 4a planta de l'Edifici d'Investigació, a Burjassot. Dia: dijous 31 d'octubre de 2019. Hora: 12:00.
Títol: Ultracompact Schwarzschild stars as black-hole`mimickers'
RESUM:
Exotic compact objects (ECOs), or black-hole `mimickers', have been under scrutiny after the event GW150914. One of these ECOs is the gravastar proposed back in 2001 by Mazur and Mottola. In this talk I will review the recently discovered connection between the constant-density interior Schwarzschild solution, or `Schwarzschild star', and gravastars. I will discuss the extension of this model to slow rotation, and also some recent investigations which suggest that Schwarzschild stars are stable against radial and non-radial
