Colloquium Abstract - Hazboun - 2025Mar13

March 13, 2025

11:00am Mountain

Jeffrey Hazboun (Oregon State)

 

Pulsar Timing Array Datasets as Multimessenger Probes of Astrophysical Phenomena

 

Abstract

Pulsar timing arrays (PTAs) serve as galactic-scale gravitational wave detectors, tracking variations in pulse arrival times over decades-long datasets. While gravitational waves are the primary target of PTAs, these datasets also capture a wealth of astrophysical phenomena, including intrinsic spin instabilities, variations in the interstellar medium, and solar wind fluctuations—each imparting time-correlated stochastic signals. We explore these signals from two perspectives: as noise sources that must be mitigated in gravitational wave searches, and as valuable astrophysical observables uniquely accessible through the simultaneous observation of many pulsars..


Local Host: Paul Demorest

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