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Realization Variance of Gravitational Wave Background Anisotropies from Shot Noise for Pulsar Timing Arrays
Meng-Xiang Lin, Adam Lidz, Chung-Pei Ma
Shot-noise anisotropies in the nHz gravitational wave background (GWB) are a promising target for pulsar timing arrays (PTAs). If the nHz GWB is sourced by merging supermassive bla…
The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses
Nikita Agarwal, Gabriella Agazie, Alessandra Amosso +120
We report updated nHz gravitational wave (GW) significance, characterization, and interpretations using the customized chromatic-noise models (CNMs) developed in Larsen, Baier et a…
Analytical Estimates of Gravitational Wave Background Anisotropies from Shot Noise and Large-Scale Structure in Pulsar Timing Arrays
Meng-Xiang Lin, Adam Lidz, Chung-Pei Ma
An important next step for pulsar timing arrays (PTAs) is to measure anisotropies in the gravitational wave background (GWB) at nano-Hz frequencies. We calculate the expecte…
The Hubble Constant from Infrared Surface Brightness Fluctuation Distances
John P. Blakeslee, Joseph B. Jensen, Chung-Pei Ma +2
We present a measurement of the Hubble constant from surface brightness fluctuation (SBF) distances for 63 bright, mainly early-type galaxies out to 100 Mpc observed with the…