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Noise Budget and Interstellar Medium Mitigation Advances in the NANOGrav Pulsar Timing Array
T. Dolch, S. Chatterjee, J. M. Cordes +9
Gravitational wave (GW) detection with pulsar timing arrays (PTAs) requires accurate noise characterization. The noise of our Galactic-scale GW detector has been systematically eva…
How proper are Bayesian models in the astronomical literature?
Hyungsuk Tak, Sujit K. Ghosh, Justin A. Ellis
The well-known Bayes theorem assumes that a posterior distribution is a probability distribution. However, the posterior distribution may no longer be a probability distribution if…
The Local Nanohertz Gravitational-Wave Landscape From Supermassive Black Hole Binaries
Chiara M. F. Mingarelli, T. Joseph W. Lazio, Alberto Sesana +6
Supermassive black hole binaries (SMBHBs) in the 10 million to 10 billion range form in galaxy mergers, and live in galactic nuclei with large and poorly constrained conc…
Robust and Accurate Inference via a Mixture of Gaussian and Student's t Errors
Hyungsuk Tak, Justin A. Ellis, Sujit K. Ghosh
A Gaussian measurement error assumption, i.e., an assumption that the data are observed up to Gaussian noise, can bias any parameter estimation in the presence of outliers. A heavy…