The Next-Generation NANOGrav Pulsar Timing Array in the DSA-2000 Era
ORAL · Invited
Abstract
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration has recently reported strong evidence for the background of low-frequency gravitational waves using an array of rapidly rotating, highly stable radio pulsars distributed across the galaxy. The underlying sources of these gravitational waves have not yet been determined and so we have entered an exciting time in low-frequency gravitational wave observation and characterization. The NANOGrav timing program has evolved significantly over the years, introducing new instrumentation and new facilities to increase the size of our array, the coverage of radio frequencies, and ultimately the sensitivity towards gravitational waves. I will highlight NANOGrav's future use of the DSA-2000, an upcoming advanced radio camera facility with 25% of its time dedicated towards pulsar timing observations. With high sensitivity, a wide bandwidth, and the prospects of increasing our array size from 80 pulsars to 200 pulsars, this facility will advance our look into this newly opened window to the Universe.
*We acknowledge support received from NSF Physics Frontiers Center award number 2020265, which supports the NANOGrav project.
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Presenters
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Michael T Lam
- SETI Institute