CTAO sensitivity to axion-like particles
Axion-like particles (ALPs) are a common feature in several extensions of the StandardModel, arising, for example, as a solution to the strong CP problem in quantum chromodynamics, or as a prediction of string theories. A significant property for the experimental detection of ALPs is their coupling...
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| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_13001.pdf |
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| author | Schiavone Francesco Di Venere Leonardo Giordano Francesco |
| author_facet | Schiavone Francesco Di Venere Leonardo Giordano Francesco |
| author_sort | Schiavone Francesco |
| collection | DOAJ |
| description | Axion-like particles (ALPs) are a common feature in several extensions of the StandardModel, arising, for example, as a solution to the strong CP problem in quantum chromodynamics, or as a prediction of string theories. A significant property for the experimental detection of ALPs is their coupling to photons, which enables ALP-photon conversions in ambient magnetic fields. In particular, gamma rays could convert into ALPs in the magnetic fields of distant objects and then reconvert in the Milky Way’s magnetic field. By eluding absorption by the extragalactic background light (EBL), such a mechanism could produce a hardening in the gamma-ray spectra of these sources. We investigate the capability of the Cherenkov Telescope Array Observatory (CTAO) to detect signatures of ALP-photon conversions in the very-high-energy spectra of known blazars at energies above 10 TeV, comparing different magnetic field scenarios. |
| format | Article |
| id | doaj-art-e0ee43adf5eb4943830f335c98ff74ae |
| institution | DOAJ |
| issn | 2100-014X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-e0ee43adf5eb4943830f335c98ff74ae2025-08-20T03:05:45ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013191300110.1051/epjconf/202531913001epjconf_ricap2024_13001CTAO sensitivity to axion-like particlesSchiavone Francesco0Di Venere Leonardo1Giordano Francesco2Dipartimento Interateneo di FisicaM.Merlin, Università degli Studi di BariINFN Sezione di BariDipartimento Interateneo di FisicaM.Merlin, Università degli Studi di BariAxion-like particles (ALPs) are a common feature in several extensions of the StandardModel, arising, for example, as a solution to the strong CP problem in quantum chromodynamics, or as a prediction of string theories. A significant property for the experimental detection of ALPs is their coupling to photons, which enables ALP-photon conversions in ambient magnetic fields. In particular, gamma rays could convert into ALPs in the magnetic fields of distant objects and then reconvert in the Milky Way’s magnetic field. By eluding absorption by the extragalactic background light (EBL), such a mechanism could produce a hardening in the gamma-ray spectra of these sources. We investigate the capability of the Cherenkov Telescope Array Observatory (CTAO) to detect signatures of ALP-photon conversions in the very-high-energy spectra of known blazars at energies above 10 TeV, comparing different magnetic field scenarios.https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_13001.pdf |
| spellingShingle | Schiavone Francesco Di Venere Leonardo Giordano Francesco CTAO sensitivity to axion-like particles EPJ Web of Conferences |
| title | CTAO sensitivity to axion-like particles |
| title_full | CTAO sensitivity to axion-like particles |
| title_fullStr | CTAO sensitivity to axion-like particles |
| title_full_unstemmed | CTAO sensitivity to axion-like particles |
| title_short | CTAO sensitivity to axion-like particles |
| title_sort | ctao sensitivity to axion like particles |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_13001.pdf |
| work_keys_str_mv | AT schiavonefrancesco ctaosensitivitytoaxionlikeparticles AT divenereleonardo ctaosensitivitytoaxionlikeparticles AT giordanofrancesco ctaosensitivitytoaxionlikeparticles |