Data: 17.10.2023

Bryn Haskell (CAMK Warsaw)

Astrophysics with continuous gravitational waves

Streszczenie:
The era of gravitational wave astronomy has begun, and the recent detection of signals from a binary neutron star coalescence has allowed to start probing high density physics in neutron star interiors in unprecedented ways. There is, however, another class of predicted gravitational wave signals that may allow for even more detailed studies of the interior of these compact stars, i.e. long lived quasi-monochromatic signals, or 'continuous' gravitational waves (CWs). These signals have not yet been detected, but the sensitivity of the recent observational run of the gravitational wave detectors, O3, has reached the point where realistic astrophysical scenarios can be probed. In this talk I will present the theoretical mechanisms for CW emission and expected sources, and review the results obtained by the LIGO-Virgo-KAGRA collaboration during O3.

Bio:
Brynmor Haskell obtained his PhD from the University of Southampton in 2006, under the supervision of Nils Andersson. After staying in Southampton for a postdoc he moved to Amsterdam with a Marie Skłodowska Curie Fellowship and after a short stay at the Albert Einstein Institute in Golm, Germany, to Melbourne with a DECRA fellowship from the Australian Research Council. In 2016 he then obtained a Marie Skłodowska Curie fellowship to come to CAMK in Warsaw, where he is currently an Associate Professor.