BayesEoR: Bayesian 21-cm Power Spectrum Estimation from Interferometric Visibilities
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909463875682304 |
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| author | Sims, Peter H. Burba, Jacob Pober, Jonathan C. |
| author_facet | Sims, Peter H. Burba, Jacob Pober, Jonathan C. |
| contents | BayesEoR is a GPU-accelerated, MPI-compatible Python package for estimating the power spectrum of redshifted 21-cm emission from interferometric observations of the Epoch of Reionization (EoR). Utilizing a Bayesian framework, BayesEoR jointly fits for the 21-cm EoR power spectrum and a "foreground" model, referring to bright, contaminating emission between us and the cosmological signal, and forward models the instrument with which these signals are observed. To perform the sampling, we use MultiNest [arXiv:1402.0004], which calculates the Bayesian evidence as part of the analysis. Thus, BayesEoR can also be used as a tool for model selection [see e.g. arXiv:1701.03384]. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_12928 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | BayesEoR: Bayesian 21-cm Power Spectrum Estimation from Interferometric Visibilities Sims, Peter H. Burba, Jacob Pober, Jonathan C. Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics BayesEoR is a GPU-accelerated, MPI-compatible Python package for estimating the power spectrum of redshifted 21-cm emission from interferometric observations of the Epoch of Reionization (EoR). Utilizing a Bayesian framework, BayesEoR jointly fits for the 21-cm EoR power spectrum and a "foreground" model, referring to bright, contaminating emission between us and the cosmological signal, and forward models the instrument with which these signals are observed. To perform the sampling, we use MultiNest [arXiv:1402.0004], which calculates the Bayesian evidence as part of the analysis. Thus, BayesEoR can also be used as a tool for model selection [see e.g. arXiv:1701.03384]. |
| title | BayesEoR: Bayesian 21-cm Power Spectrum Estimation from Interferometric Visibilities |
| topic | Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2501.12928 |