Bayesian pulsar timing and noise analysis with Vela.jl: the wideband paradigm

2025/05/15 by Susobhanan, Abhimanyu
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Instrumentation and Methods for Astrophysics (astro-ph.IM)

paper · doi:10.48550/arxiv.2505.10141

Abstract

Vela is a package for performing Bayesian pulsar timing & noise analysis written in Julia and Python. In the wideband paradigm of pulsar timing, simultaneous time of arrival and dispersion measure measurements are derived from a radio observation using frequency-resolved integrated pulse profiles and templates without splitting the observation into multiple frequency sub-bands. We describe the implementation of the wideband timing paradigm in Vela, and demonstrate its usage using the NANOGrav 12.5-year wideband data of PSR J1923+2515. Vela is the first software package to provide this functionality.

Citations

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Related

• Bayesian pulsar timing and noise analysis with Vela.jl: an overview
• Revisiting wideband pulsar timing measurements
• How to take the interstellar weather with you in pulsar timing analysis
• Characterizing the effects of pulse shape changes on pulsar timing precision
• Gaussian process representation of dispersion measure noise in pulsar wideband datasets