A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition
We present a statistical analysis of the association between UHECRs and proposed astrophysical sources. Our approach is based on the Bayesian hierarchical framework presented in Capel & Mortlock 2019, but with notable extensions. Using CRPropa3, we now include the lensing effect of the Galactic...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/09/epjconf_uhecr2023_03009.pdf |
| _version_ | 1797835261537681408 |
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| author | Watanabe Keito Fedynitch Anatoli Capel Francesca Sagawa Hiroyuki |
| author_facet | Watanabe Keito Fedynitch Anatoli Capel Francesca Sagawa Hiroyuki |
| author_sort | Watanabe Keito |
| collection | DOAJ |
| description | We present a statistical analysis of the association between UHECRs and proposed astrophysical sources. Our approach is based on the Bayesian hierarchical framework presented in Capel & Mortlock 2019, but with notable extensions. Using CRPropa3, we now include the lensing effect of the Galactic magnetic field and explore the impact of heavier compositions. This analysis directly connects to the physics of UHECR propagation so that each detected event is allowed different possible deflections and energy-loss horizons based on its measured energy, arrival direction and the corresponding uncertainties. In this way, we can easily interpret the connection to proposed sources in a physical way. We verify our approach using simulated data and then present our results with views of the Northern and Southern skies thanks to publicly available data from both the Telescope Array experiment and Pierre Auger Observatory. |
| first_indexed | 2024-04-09T14:51:20Z |
| format | Article |
| id | doaj.art-c39bcf97c8564262ab38d676e6be56d1 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-09T14:51:20Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-c39bcf97c8564262ab38d676e6be56d12023-05-02T09:31:19ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012830300910.1051/epjconf/202328303009epjconf_uhecr2023_03009A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and compositionWatanabe Keito0Fedynitch Anatoli1Capel Francesca2Sagawa Hiroyuki3Max Planck Institute for PhysicsInstitute of PhysicsMax Planck Institute for PhysicsInstitute for Cosmic Ray Research, the University of TokyoWe present a statistical analysis of the association between UHECRs and proposed astrophysical sources. Our approach is based on the Bayesian hierarchical framework presented in Capel & Mortlock 2019, but with notable extensions. Using CRPropa3, we now include the lensing effect of the Galactic magnetic field and explore the impact of heavier compositions. This analysis directly connects to the physics of UHECR propagation so that each detected event is allowed different possible deflections and energy-loss horizons based on its measured energy, arrival direction and the corresponding uncertainties. In this way, we can easily interpret the connection to proposed sources in a physical way. We verify our approach using simulated data and then present our results with views of the Northern and Southern skies thanks to publicly available data from both the Telescope Array experiment and Pierre Auger Observatory.https://www.epj-conferences.org/articles/epjconf/pdf/2023/09/epjconf_uhecr2023_03009.pdf |
| spellingShingle | Watanabe Keito Fedynitch Anatoli Capel Francesca Sagawa Hiroyuki A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition EPJ Web of Conferences |
| title | A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition |
| title_full | A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition |
| title_fullStr | A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition |
| title_full_unstemmed | A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition |
| title_short | A Bayesian source association analysis of UHECRs: Impact of the Galactic magnetic field and composition |
| title_sort | bayesian source association analysis of uhecrs impact of the galactic magnetic field and composition |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/09/epjconf_uhecr2023_03009.pdf |
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