Oberlin College and Conservatory

Physics & Astronomy Lecture Series: Sarah J. Vigeland

Thursday, September 24 at 5:00pm

Virtual Event

The Department of Physics & Astronomy hosts guest speaker Sarah J. Vigeland, assistant professor of physics at the University of Wisconsin-Milwaukee's Center for Gravitation, Cosmology and Astrophysics. Her presentation will be on the topic of ‘‘Merging Galaxies and Supermassive Black Holes: Detecting Gravitational Waves with Pulsar Timing Arrays.’’

This lecture will be presented as a Zoom webinar; register online.


For more than a decade, pulsar timing arrays (PTAs) have been using millisecond pulsars to search for low-frequency gravitational waves (GWs) from supermassive black hole binaries in distant galaxies. PTAs are sensitive to individual SMBHBs, as well as the gravitational wave “hum” produced by the sum of all SMBHBs. I will discuss how PTAs detect gravitational waves, and give the current status of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) PTA.

Event Type

Virtual Events, Webinar


Academic, Physics and Astronomy



Photo Alternate Text

Headshot photograph of Sarah J. Vigeland.

Contact Person

Rachel Wysocki

Contact Phone Number

(440) 775-8330

Contact E-mail Address


Google Calendar iCal Outlook

Recent Activity

You're not going yet!

This event requires registration.