A new code for parameter estimation in searches for gravitational waves from known pulsars

Pitkin, M. and Gill, C. and Veitch, J. and Macdonald, E. and Woan, Graham (2012) A new code for parameter estimation in searches for gravitational waves from known pulsars. In: Journal of Physics Conference Series. Journal of Physics Conference Series, 363 . UNSPECIFIED.

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Abstract

We describe the consistency testing of a new code for gravitational wave signal parameter estimation in known pulsar searches. The code uses an implementation of nested sampling to explore the likelihood volume. Using fake signals and simulated noise we compare this to a previous code that calculated the signal parameter posterior distributions on both a grid and using a crude Markov chain Monte Carlo (MCMC) method. We define a new parameterisation of two orientation angles of neutron stars used in the signal model (the initial phase and polarisation angle), which breaks a degeneracy between them and allows more efficient exploration of those parameters. Finally, we briefly describe potential areas for further study and the uses of this code in the future.

Item Type:
Contribution in Book/Report/Proceedings
ID Code:
135721
Deposited By:
Deposited On:
23 Jul 2019 15:55
Refereed?:
Yes
Published?:
Published
Last Modified:
25 Sep 2020 05:49