Strong lensing of gravitational waves - new opportunities for multimessenger astronomy

Abstract: Direct detections of gravitational waves (GW) opened a new era of GW astronomy. Successful GW detection and observations of coalescing binary neutron star (NS-NS) system across a spectrum of electromagnetic waves (EM) elevated multimessenger astronomy to the next stage. Future generations of GW detectors on the ground and in the space will yield a significant statistics of such events reaching up to redshift z=5 and even deeper. Non-negligible ammount of such events has a chance of being strongly lensed. In my talk I will review the issue of GW lensing and discuss new opportunities emerging from future detections of lensed GW signals. Wave phenomena concerning lensed GW signals, like diffraction fringes and beat patterns will be presented. An interesting idea of measuring dark matter self-interactions due to bulk viscosity attenuating GW will be discussed.

astrophysicscondensed mattergeneral relativity and quantum cosmologyhigh energy physicsmathematical physicsclassical physicsgeneral physics

Audience: researchers in the topic

Theoretical physics seminar @ Tartu