Astro Seminar Series - VIA ZOOM

Wednesday, November 16, 2022 11:30 am - 11:30 am EST

Emery Trott is a Physics PhD candidate at the University of Michigan advised by Dragan Huterer. Emery is interested in tensions in the LCDM model of the Universe, and is currently working on how gravitational waves can inform us about the Hubble constant.

Dark Siren Gravitational Waves and the Hubble Constant

Gravitational waves produced by compact binary mergers are "standard sirens" whose distances can be combined with electromagnetic follow-up surveys to measure the Hubble constant. This powerful new probe will soon meaningfully weigh-in on the 5-sigma Hubble tension, and on possible extensions of Lambda-CDM cosmology. A major complicating factor is that over 95% of these events do not actually have identifiable electromagnetic counterparts, and are therefore considered "dark sirens". This talk will touch on the current state of gravitational wave cosmology and address the methods for extracting reliable information on the Hubble constant from dark sirens.

Would you like to join this Zoom seminar?  Please email WCA.