About
Gravitational wave (GW) events are an exciting new tool for cosmology, with major applications as an independent measurement of the Hubble constant and as a probe of departures from General Relativity. Crucially, however, we must understand the astrophysics of GW sources in order to make these measurements.I'll explain the dark siren method used to extract this information from gravitational wave events, and apply this method to the most recent data from the LIGO-Virgo-KAGRA gravitational wave detectors. I'll present the latest results related to H_0, modified gravity parameters, and the population of compact objects.Time permitting, I'll also introduce an extension of these techniques: cross-correlation of GW sources and galaxies. We'll wrap up by considering how these new probes fit within the toolbox of modern cosmology. .
0:00:00 Slide 1
0:01:38 Slide 2
0:02:45 Slide 3
0:03:59 Slide 4
0:05:28 Slide 5
0:07:04 Slide 6
0:08:35 Slide 7
0:10:31 Slide 8
0:12:38 Slide 9
0:16:29 Slide 10
0:17:55 Slide 11
The talk
Credits and licence
- Institution
- CERN
- Department
- EuCAPT Virtual Colloquia
- Speaker
- Tessa Baker
- Year
- 2025
- Language
- English
- Subjects
- Astronomy and space
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed