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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.04195 |
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| _version_ | 1866914859475533824 |
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| author | Xue, Rui Wang, Ze-Rui Joshi, Jagdish C. Li, Wei-Jian |
| author_facet | Xue, Rui Wang, Ze-Rui Joshi, Jagdish C. Li, Wei-Jian |
| contents | The origin of diffuse high-energy neutrinos from TeV to PeV energies detected by IceCube Observatory remains a mystery. In our previous work, we have shown that hadronuclear (p-p) interactions in AGN jets could be important and generate detectable very-high-energy emissions. Here, we further explore these interactions in the AGN jets based on their luminosity function. The diffuse neutrino flux and corresponding $γ$-ray flux have been calculated and compared with observational data. In our modeling, two beaming patterns are considered separately. To make sure that the corresponding $γ$-ray flux does not overshoot the diffuse $γ$-ray background, we find that if the neutrino production region in jet is opaque to $γ$ rays, p-p interactions in AGN jets with a small viewing angle (the blazar case) are able to interpret the PeV neutrino background. Similarly, AGN jets with a large viewing angle (the radio galaxy case) may interpret the TeV neutrino background. While, if the neutrino production region is transparent to $γ$ rays, only blazars have the potential to interpret the DNB around PeV band. Some caveats are also discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_04195 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hadronuclear interactions in AGN jets as the origin of the diffuse high-energy neutrino background Xue, Rui Wang, Ze-Rui Joshi, Jagdish C. Li, Wei-Jian High Energy Astrophysical Phenomena The origin of diffuse high-energy neutrinos from TeV to PeV energies detected by IceCube Observatory remains a mystery. In our previous work, we have shown that hadronuclear (p-p) interactions in AGN jets could be important and generate detectable very-high-energy emissions. Here, we further explore these interactions in the AGN jets based on their luminosity function. The diffuse neutrino flux and corresponding $γ$-ray flux have been calculated and compared with observational data. In our modeling, two beaming patterns are considered separately. To make sure that the corresponding $γ$-ray flux does not overshoot the diffuse $γ$-ray background, we find that if the neutrino production region in jet is opaque to $γ$ rays, p-p interactions in AGN jets with a small viewing angle (the blazar case) are able to interpret the PeV neutrino background. Similarly, AGN jets with a large viewing angle (the radio galaxy case) may interpret the TeV neutrino background. While, if the neutrino production region is transparent to $γ$ rays, only blazars have the potential to interpret the DNB around PeV band. Some caveats are also discussed. |
| title | Hadronuclear interactions in AGN jets as the origin of the diffuse high-energy neutrino background |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2407.04195 |