High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei
We present a bottom-up calculation of the flux of ultrahigh-energy cosmic rays (UHECRs) and high-energy neutrinos produced by powerful jets of active galactic nuclei (AGNs). By propagating test particles in 3D relativistic magnetohydrodynamic jet simulations, including a Monte Carlo treatment of sub...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/aca481 |
| _version_ | 1797697229652230144 |
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| author | Rostom Mbarek Damiano Caprioli Kohta Murase |
| author_facet | Rostom Mbarek Damiano Caprioli Kohta Murase |
| author_sort | Rostom Mbarek |
| collection | DOAJ |
| description | We present a bottom-up calculation of the flux of ultrahigh-energy cosmic rays (UHECRs) and high-energy neutrinos produced by powerful jets of active galactic nuclei (AGNs). By propagating test particles in 3D relativistic magnetohydrodynamic jet simulations, including a Monte Carlo treatment of sub-grid pitch-angle scattering and attenuation losses due to realistic photon fields, we study the spectrum and composition of the accelerated UHECRs and estimate the amount of neutrinos produced in such sources. We find that UHECRs may not be significantly affected by photodisintegration in AGN jets where the espresso mechanism efficiently accelerates particles, consistent with Auger’s results that favor a heavy composition at the highest energies. Moreover, we present estimates and upper bounds for the flux of high-energy neutrinos expected from AGN jets. In particular, we find that (i) source neutrinos may account for a sizable fraction, or even dominate, the expected flux of cosmogenic neutrinos; (ii) neutrinos from the β -decay of secondary neutrons produced in nucleus photodisintegration end up in the teraelectronvolt to petaelectronvolt band observed by IceCube, but can hardly account for the observed flux; (iii) UHECRs accelerated via the espresso mechanism lead to nearly isotropic neutrino emission, which suggests that nearby radio galaxies may be more promising as potential sources. We discuss our results in light of multimessenger astronomy and current/future neutrino experiments. |
| first_indexed | 2024-03-12T03:37:23Z |
| format | Article |
| id | doaj.art-045b95212a9c4c0caddeb2cfdd5f33f4 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:37:23Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-045b95212a9c4c0caddeb2cfdd5f33f42023-09-03T13:07:56ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194213710.3847/1538-4357/aca481High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic NucleiRostom Mbarek0https://orcid.org/0000-0001-9475-5292Damiano Caprioli1https://orcid.org/0000-0003-0939-8775Kohta Murase2https://orcid.org/0000-0002-5358-5642Department of Astronomy & Astrophysics, University of Chicago , 5640 S Ellis Ave., Chicago, IL 60637, USA ; rmbarek@uchicago.edu; Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA; Enrico Fermi Institute, University of Chicago , Chicago, IL 60637, USADepartment of Astronomy & Astrophysics, University of Chicago , 5640 S Ellis Ave., Chicago, IL 60637, USA ; rmbarek@uchicago.edu; Enrico Fermi Institute, University of Chicago , Chicago, IL 60637, USADepartment of Physics, The Pennsylvania State University , University Park, Pennsylvania 16802, USA; Department of Astronomy & Astrophysics, The Pennsylvania State University , University Park, Pennsylvania 16802, USA; Center for Multimessenger Astrophysics, Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, Pennsylvania 16802, USA; Center for Gravitational Physics, Yukawa Institute for Theoretical Physics , Kyoto 606-8502 JapanWe present a bottom-up calculation of the flux of ultrahigh-energy cosmic rays (UHECRs) and high-energy neutrinos produced by powerful jets of active galactic nuclei (AGNs). By propagating test particles in 3D relativistic magnetohydrodynamic jet simulations, including a Monte Carlo treatment of sub-grid pitch-angle scattering and attenuation losses due to realistic photon fields, we study the spectrum and composition of the accelerated UHECRs and estimate the amount of neutrinos produced in such sources. We find that UHECRs may not be significantly affected by photodisintegration in AGN jets where the espresso mechanism efficiently accelerates particles, consistent with Auger’s results that favor a heavy composition at the highest energies. Moreover, we present estimates and upper bounds for the flux of high-energy neutrinos expected from AGN jets. In particular, we find that (i) source neutrinos may account for a sizable fraction, or even dominate, the expected flux of cosmogenic neutrinos; (ii) neutrinos from the β -decay of secondary neutrons produced in nucleus photodisintegration end up in the teraelectronvolt to petaelectronvolt band observed by IceCube, but can hardly account for the observed flux; (iii) UHECRs accelerated via the espresso mechanism lead to nearly isotropic neutrino emission, which suggests that nearby radio galaxies may be more promising as potential sources. We discuss our results in light of multimessenger astronomy and current/future neutrino experiments.https://doi.org/10.3847/1538-4357/aca481Relativistic jetsRadio jetsParticle astrophysicsUltra-high-energy cosmic radiationNeutrino astronomyCosmological neutrinos |
| spellingShingle | Rostom Mbarek Damiano Caprioli Kohta Murase High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei The Astrophysical Journal Relativistic jets Radio jets Particle astrophysics Ultra-high-energy cosmic radiation Neutrino astronomy Cosmological neutrinos |
| title | High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei |
| title_full | High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei |
| title_fullStr | High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei |
| title_full_unstemmed | High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei |
| title_short | High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei |
| title_sort | high energy neutrino emission from espresso reaccelerated ions in jets of active galactic nuclei |
| topic | Relativistic jets Radio jets Particle astrophysics Ultra-high-energy cosmic radiation Neutrino astronomy Cosmological neutrinos |
| url | https://doi.org/10.3847/1538-4357/aca481 |
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