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- W3122043399 abstract "ABSTRACT The incomplete sampling of data in complex polarization measurements from radio telescopes negatively affects both the rotation measure (RM) transfer function and the Faraday depth spectra derived from these data. Such gaps in polarization data are mostly caused by flagging of radio frequency interference and their effects worsen as the percentage of missing data increases. In this paper we present a novel method for inferring missing polarization data based on Gaussian processes (GPs). GPs are stochastic processes that enable us to encode prior knowledge in our models. They also provide a comprehensive way of incorporating and quantifying uncertainties in regression modelling. In addition to providing non-parametric model estimates for missing values, we also demonstrate that GP modelling can be used for recovering rotation measure values directly from complex polarization data, and that inferring missing polarization data using this probabilistic method improves the resolution of reconstructed Faraday depth spectra." @default.
- W3122043399 created "2021-02-01" @default.
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- W3122043399 date "2021-02-12" @default.
- W3122043399 modified "2023-10-18" @default.
- W3122043399 title "Gaussian process modelling for improved resolution in Faraday depth reconstruction" @default.
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- W3122043399 doi "https://doi.org/10.1093/mnras/stab379" @default.
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