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- W4386498962 abstract "We explore the use of Gibbs sampling in estimating the noise properties of individual pulsars and illustrate its effectiveness using the NANOGrav 11-year dataset. We find that Gibbs sampling noise modeling (GM) is more efficient than the current standard Bayesian techniques (SM) for single pulsar analyses by yielding model parameter posteriors with average effective-sample-size ratio (GM/SM) of 6 across all parameters and pulsars. Furthermore, the output of GM contains posteriors for the Fourier coefficients that can be used to characterize the underlying red noise process of any pulsar's timing residuals, which are absent in current implementations of SM. Through simulations, we demonstrate the potential for such coefficients to measure the spatial cross-correlations between pulsar pairs produced by a gravitational wave background." @default.
- W4386498962 created "2023-09-07" @default.
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- W4386498962 date "2023-09-07" @default.
- W4386498962 modified "2023-10-16" @default.
- W4386498962 title "Exploring the capabilities of Gibbs sampling in pulsar timing arrays" @default.
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- W4386498962 doi "https://doi.org/10.1103/physrevd.108.063008" @default.
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