Type: 
Colloquium
Date-Time: 
Monday, April 2, 2018 - 16:00
Location: 
WNGR 116
Event Speaker: 
Xavier Siemens (UW Milwaukee)
Local Contact: 
Oksana Ostroverkhova
Abstract: 
For over a decade the North American Nanohertz Observatory for Gravitational 
Waves (NANOGrav) has been using the most sensitive radio telescopes in the world--the 
Green Bank Telescope and Arecibo--to monitor millisecond pulsars. The goal of the 
NANOGrav is to directly detect low-frequency (nano-Hertz) gravitational waves, which 
cause small correlated changes in the times of arrival of radio pulses from millisecond 
pulsars. The most promising sources of gravitational waves at these frequencies are 
supermassive binary black holes that coalesce following the mergers of galaxies. In this 
talk I will discuss the work of NANOGrav, our sensitivity to gravitational waves including 
detection and astrophysical prospects for the next few years, as well as plans for
low-frequency gravitational-wave astrophysics and instrumentation in the next decade 
and beyond.
Refreshments: 
Refreshments will be offered half an hour before the colloquium in Weniger 379