Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators
We predict that neutrino sources following the matter distribution of the Universe result in an anisotropy in the neutrino sky imprinted by the local large-scale structure (LSS). We calculate the level of this anisotropy and explore how it depends on the cosmological evolution of neutrino sources. W...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/add931 |
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| author | Marco Stein Muzio Noémie Globus |
| author_facet | Marco Stein Muzio Noémie Globus |
| author_sort | Marco Stein Muzio |
| collection | DOAJ |
| description | We predict that neutrino sources following the matter distribution of the Universe result in an anisotropy in the neutrino sky imprinted by the local large-scale structure (LSS). We calculate the level of this anisotropy and explore how it depends on the cosmological evolution of neutrino sources. We show how the level of anisotropy can be amplified when a cutoff in the neutrino spectrum is considered, introducing an effective neutrino horizon. This effect might allow for future neutrino detectors to measure a neutrino anisotropy associated with the local LSS. Measurement of the level of this anisotropy along with features of the neutrino spectrum will allow observers to constrain the cosmological evolution of neutrino sources, which at ultra-high energies (UHEs) are also expected to be the sources of UHE cosmic rays. |
| format | Article |
| id | doaj-art-7f315a278e564a17835841a78ae34ed4 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-7f315a278e564a17835841a78ae34ed42025-08-20T03:30:20ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198716210.3847/1538-4357/add931Neutrino Anisotropy as a Probe of Extreme Astrophysical AcceleratorsMarco Stein Muzio0https://orcid.org/0000-0003-4615-5529Noémie Globus1https://orcid.org/0000-0001-9011-0737Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin , Madison, WI 53706, USA ; muzio@wisc.edu; Department of Physics, Pennsylvania State University , University Park, PA 16802, USA; Department of Astronomy and Astrophysics, Pennsylvania State University , University Park, PA 16802, USA; Institute of Gravitation and the Cosmos , Center for Multi-Messenger Astrophysics, Pennsylvania State University, University Park, PA 16802, USAInstituto de Astronomía, Universidad Nacional Autónoma de México Campus Ensenada , Ensenada, BC 22860, México; Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , Stanford, CA 94305, USA; Astrophysical Big Bang Laboratory , RIKEN, Wako, Saitama, JapanWe predict that neutrino sources following the matter distribution of the Universe result in an anisotropy in the neutrino sky imprinted by the local large-scale structure (LSS). We calculate the level of this anisotropy and explore how it depends on the cosmological evolution of neutrino sources. We show how the level of anisotropy can be amplified when a cutoff in the neutrino spectrum is considered, introducing an effective neutrino horizon. This effect might allow for future neutrino detectors to measure a neutrino anisotropy associated with the local LSS. Measurement of the level of this anisotropy along with features of the neutrino spectrum will allow observers to constrain the cosmological evolution of neutrino sources, which at ultra-high energies (UHEs) are also expected to be the sources of UHE cosmic rays.https://doi.org/10.3847/1538-4357/add931Ultra-high-energy cosmic radiationCosmic ray sourcesNeutrino astronomy |
| spellingShingle | Marco Stein Muzio Noémie Globus Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators The Astrophysical Journal Ultra-high-energy cosmic radiation Cosmic ray sources Neutrino astronomy |
| title | Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators |
| title_full | Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators |
| title_fullStr | Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators |
| title_full_unstemmed | Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators |
| title_short | Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators |
| title_sort | neutrino anisotropy as a probe of extreme astrophysical accelerators |
| topic | Ultra-high-energy cosmic radiation Cosmic ray sources Neutrino astronomy |
| url | https://doi.org/10.3847/1538-4357/add931 |
| work_keys_str_mv | AT marcosteinmuzio neutrinoanisotropyasaprobeofextremeastrophysicalaccelerators AT noemieglobus neutrinoanisotropyasaprobeofextremeastrophysicalaccelerators |