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| Format: | Preprint |
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2025
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| Online Access: | https://arxiv.org/abs/2506.14659 |
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| _version_ | 1866912436541456384 |
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| author | Dekker, Ariane Herrera, Gonzalo Kantzas, Dimitrios |
| author_facet | Dekker, Ariane Herrera, Gonzalo Kantzas, Dimitrios |
| contents | High-energy neutrino observation from the Seyfert galaxy NGC 1068 offers new insights into the non-thermal processes of active galactic nuclei. Simultaneous gamma-rays emitted by such sources can possibly oscillate into axion-like particles (ALPs) when propagating through astrophysical magnetic fields, potentially modifying the observed spectrum. To probe for ALP-induced signals, a robust understanding of the emission processes at the source is necessary. In this work, we perform a dedicated multi-messenger analysis by modeling a jet in the innermost vicinity of the central supermassive black hole of NGC 1068. We model in particular the neutrino and gamma-ray emission originating in lepto-hadronic collisions between jet accelerated particles and background particles from the corona, reproducing both the Fermi-LAT and IceCube data. These source models serve as a baseline for ALP searches, and we derive limits on the ALP-photon coupling by marginalizing over motivated ranges of astrophysical parameters. We find $g_{aγ} \lesssim 7 \times 10^{-11}$GeV$^{-1}$ for $m_a \lesssim 10^{-9}$ eV. These limits may be weaker than existing constraints, but they demonstrate the potential of multi-messenger observations to probe new physics. We conclude by discussing how additional upcoming multi-messenger sources and improved observational precision can enhance ALP sensitivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_14659 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Axion-like particle limits from multi-messenger sources Dekker, Ariane Herrera, Gonzalo Kantzas, Dimitrios High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High-energy neutrino observation from the Seyfert galaxy NGC 1068 offers new insights into the non-thermal processes of active galactic nuclei. Simultaneous gamma-rays emitted by such sources can possibly oscillate into axion-like particles (ALPs) when propagating through astrophysical magnetic fields, potentially modifying the observed spectrum. To probe for ALP-induced signals, a robust understanding of the emission processes at the source is necessary. In this work, we perform a dedicated multi-messenger analysis by modeling a jet in the innermost vicinity of the central supermassive black hole of NGC 1068. We model in particular the neutrino and gamma-ray emission originating in lepto-hadronic collisions between jet accelerated particles and background particles from the corona, reproducing both the Fermi-LAT and IceCube data. These source models serve as a baseline for ALP searches, and we derive limits on the ALP-photon coupling by marginalizing over motivated ranges of astrophysical parameters. We find $g_{aγ} \lesssim 7 \times 10^{-11}$GeV$^{-1}$ for $m_a \lesssim 10^{-9}$ eV. These limits may be weaker than existing constraints, but they demonstrate the potential of multi-messenger observations to probe new physics. We conclude by discussing how additional upcoming multi-messenger sources and improved observational precision can enhance ALP sensitivity. |
| title | Axion-like particle limits from multi-messenger sources |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2506.14659 |