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  A Bayesian parameter estimation approach to pulsar time-of-arrival analysis

Messenger, C., Lommen, A., Demorest, P., & Ransom, S. (2011). A Bayesian parameter estimation approach to pulsar time-of-arrival analysis. Classical and quantum gravity, 28(5): 055001. doi:10.1088/0264-9381/28/5/055001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-090D-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-090E-6
Genre: Journal Article

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Messenger, C.1, Author              
Lommen, A., Author
Demorest, P., Author
Ransom, S., Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM,General Relativity and Quantum Cosmology, gr-qc
 Abstract: The increasing sensitivities of pulsar timing arrays to ultra-low frequency (nHz) gravitational waves promises to achieve direct gravitational wave detection within the next 5-10 years. While there are many parallel efforts being made in the improvement of telescope sensitivity, the detection of stable millisecond pulsars and the improvement of the timing software, there are reasons to believe that the methods used to accurately determine the time-of-arrival (TOA) of pulses from radio pulsars can be improved upon. More specifically, the determination of the uncertainties on these TOAs, which strongly affect the ability to detect GWs through pulsar timing, may be unreliable. We propose two Bayesian methods for the generation of pulsar TOAs starting from pulsar "search-mode" data and pre-folded data. These methods are applied to simulated toy-model examples and in this initial work we focus on the issue of uncertainties in the folding period. The final results of our analysis are expressed in the form of posterior probability distributions on the signal parameters (including the TOA) from a single observation.

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 Dates: 2011-03-022011
 Publication Status: Published in print
 Pages: 16 pages, 4 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1103.0518
DOI: 10.1088/0264-9381/28/5/055001
 Degree: -

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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 28 (5) Sequence Number: 055001 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: /journals/resource/954925513480_1