Webinar: Gravitational Waves as a New Probe of Dark Matter
por
Bhupal Dev
(Washington U., St. Louis)
→
Europe/Madrid
retransmitted from Seminar Room, 1.1.1 (IFIC)
retransmitted from Seminar Room, 1.1.1
IFIC
Paterna (Valencia)
Descripción
A dark matter (DM) halo intervening along the line of sight of a gravitational wave (GW) signal could induce a change in the speed of GW. We show that this change of speed is observable with the current LIGO sensitivity for a class of ultralight DM models which could form a Bose-Einstein condensate (BEC) in the early universe and behave as a single coherent wave instead of individual particles in galaxies. Hence, we propose to use the deviation in the speed of GW as a new probe of the BEC DM parameter space. With a multi-messenger approach to GW astronomy and/or with extended sensitivity to lower GW frequencies, the entire BEC DM parameter space can be effectively probed by our new method in the near future.