University of Minnesota
School of Physics & Astronomy

MN Institute for Astrophysics Colloquium

Friday, September 15th 2017
2:30 pm:
MN Institute for Astrophysics Colloquium in Tate Lab of Physics and Astronomy 101
Speaker: Sarah Vigeland, U. Wisconsin, Milwaukee
Subject: Detecting Low-Frequency Gravitational Waves with NANOGrav
Refreshments to be served in the MIfA Interaction Area (Tate 285-11) following the colloquium.

For the past decade pulsar timing arrays (PTAs) have been monitoring
millisecond pulsars looking for the correlated timing residuals
caused by low-frequency gravitational waves (GWs) with frequencies
between 1 - 100 nHz. One type of source in this regime are
supermassive black hole binaries (SMBHBs). PTAs are sensitive to both
GWs from individual SMBHBs as well as a GW stochastic background produced
by the superposition of all SMBHBs. I will discuss the detection techniques
used by PTAs as well as the current status of the North American Nanohertz
Observatory for Gravitational Waves (NANOGrav) PTA.

Faculty Host: Vuk Mandic

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