Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session U09: Gravitational Wave Searches: Stochastic Gravitational Wave Background
1:30 PM–3:18 PM,
Tuesday, April 18, 2023
Room: Conrad B/C - 2nd Floor
Sponsoring
Unit:
DGRAV
Chair: Xavier Siemens
Abstract: U09.00009 : Estimating and Characterizing Gravitational Wave Backgrounds in Pulsar Timing Arrays with Frequentist Statistics*
3:06 PM–3:18 PM
Presenter:
Kyle Gersbach
(Vanderbilt University)
Authors:
Kyle Gersbach
(Vanderbilt University)
Stephen R Taylor
(Vanderbilt University)
Collaboration:
NANOGrav
In this talk, I will discuss how we take the current implementation of the optimal statistic and make key changes to allow for an arbitrary GWB spectral shape. This acts as a rapid proxy for a Bayesian search that may take upwards of weeks to run. This method can be used for a wide range of analyses including unmodeled single-source searches, GWB component separation, and per-frequency anisotropy searches.
*NANOGrav Physics Frontier Center NSF #2020265, and NSF CAREER #2146016.
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