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- W2000407813 abstract "A new Bayesian software package for the analysis of pulsar timing data is presented in the form of temponest which allows for the robust determination of the non-linear pulsar timing solution simultaneously with a range of additional stochastic parameters. This includes both red spin noise and dispersion measure variations using either power-law descriptions of the noise, or through a model-independent method that parametrizes the power at individual frequencies in the signal. We use temponest to show that at noise levels representative of current data sets in the European Pulsar Timing Array and International Pulsar Timing Array the linear timing model can underestimate the uncertainties of the timing solution by up to an order of magnitude. We also show how to perform Bayesian model selection between different sets of timing model and stochastic parameters, for example, by demonstrating that in the pulsar B1937+21 both the dispersion measure variations and spin noise in the data are optimally modelled by simple power laws. Finally, we show that not including the stochastic parameters simultaneously with the timing model can lead to unpredictable variation in the estimated uncertainties, compromising the robustness of the scientific results extracted from such analysis." @default.
- W2000407813 created "2016-06-24" @default.
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- W2000407813 date "2013-12-01" @default.
- W2000407813 modified "2023-10-14" @default.
- W2000407813 title "temponest: a Bayesian approach to pulsar timing analysis" @default.
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- W2000407813 doi "https://doi.org/10.1093/mnras/stt2122" @default.
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