Final published version
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
A new code for parameter estimation in searches for gravitational waves from known pulsars. / Pitkin, M.; Gill, C.; Veitch, J. et al.
Journal of Physics Conference Series. Vol. 363 2012. 012041 (Journal of Physics Conference Series).Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - A new code for parameter estimation in searches for gravitational waves from known pulsars
AU - Pitkin, M.
AU - Gill, C.
AU - Veitch, J.
AU - Macdonald, E.
AU - Woan, Graham
PY - 2012/6/1
Y1 - 2012/6/1
N2 - 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.
AB - 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.
U2 - 10.1088/1742-6596/363/1/012041
DO - 10.1088/1742-6596/363/1/012041
M3 - Conference contribution/Paper
VL - 363
T3 - Journal of Physics Conference Series
BT - Journal of Physics Conference Series
ER -