Northwestern Events Calendar

Jan
21
2020

Astro Seminar: Sarah Vigeland: Probing Massive and Supermassive Black Holes with Gravitational Waves

Sarah Vigeland

When: Tuesday, January 21, 2020
4:00 PM - 5:00 PM Central

Where: 1800 Sherman Avenue, 7th Floor, Evanston, IL 60201 map it

Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students

Contact: Pamela Villalovoz   (847) 491-3644

Group: Physics and Astronomy Astrophysics Seminars

Category: Academic

Description:

Observations have shown that nearly all galaxies harbor massive or supermassive black holes at their centers. Gravitational wave (GW) observations of these black holes will shed light on their growth and evolution, and the merger histories of galaxies. Massive and supermassive black holes are also ideal laboratories for studying strong-field gravity. Pulsar timing arrays (PTAs) use observations of millisecond pulsars to detect low-frequency GWs with frequencies ~1-100 nHz, and can detect GWs emitted by supermassive black hole binaries, which form when two galaxies merge. I will discuss source modeling and detection techniques for PTAs, as well as present limits on nanohertz GWs from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration.

 

Speaker: Sarah Vigeland, University of Wisconsin-Milwaukee

 

Host: Erin Cox

 

 

Keywords: Physics, Astronomy, Astrophysics

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