Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays
In the standard picture of Galactic cosmic rays, a diffuse flux of high-energy gamma rays and neutrinos is produced from inelastic collisions of cosmic-ray nuclei with the interstellar gas. The neutrino flux is a guaranteed signal for high-energy neutrino observatories such as IceCube but has not be...
| 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 |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acc1e2 |
| _version_ | 1797696357810569216 |
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| author | Georg Schwefer Philipp Mertsch Christopher Wiebusch |
| author_facet | Georg Schwefer Philipp Mertsch Christopher Wiebusch |
| author_sort | Georg Schwefer |
| collection | DOAJ |
| description | In the standard picture of Galactic cosmic rays, a diffuse flux of high-energy gamma rays and neutrinos is produced from inelastic collisions of cosmic-ray nuclei with the interstellar gas. The neutrino flux is a guaranteed signal for high-energy neutrino observatories such as IceCube but has not been found yet. Experimental searches for this flux constitute an important test of the standard picture of Galactic cosmic rays. Both observation and nonobservation would allow important implications for the physics of cosmic-ray acceleration and transport. We present CRINGE , a new model of Galactic diffuse high-energy gamma rays and neutrinos, fitted to recent cosmic-ray data from AMS-02, DAMPE, IceTop, as well as KASCADE. We quantify the uncertainties for the predicted emission from the cosmic-ray model but also from the choice of source distribution, gas maps, and cross sections. We consider the possibility of a contribution from unresolved sources. Our model predictions exhibit significant deviations from older models. Our fiducial model is available at https://doi.org/10.5281/zenodo.7859442 https://zenodo.org/record/7859442 . |
| first_indexed | 2024-03-12T03:25:14Z |
| format | Article |
| id | doaj.art-9f8256cee94f4e73836b8a791959f066 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:25:14Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-9f8256cee94f4e73836b8a791959f0662023-09-03T13:41:35ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194911610.3847/1538-4357/acc1e2Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic RaysGeorg Schwefer0https://orcid.org/0000-0002-2050-8413Philipp Mertsch1https://orcid.org/0000-0002-2197-3421Christopher Wiebusch2https://orcid.org/0000-0002-6418-3008Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University , 52056 Aachen, Germany ; georg.schwefer@mpi-hd.mpg.de; III. Physikalisches Institut B, RWTH Aachen University , D-52056 Aachen, Germany; Max-Planck-Institut für Kernphysik , Saupfercheckweg 1, D-69117 Heidelberg, GermanyInstitute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University , 52056 Aachen, Germany ; georg.schwefer@mpi-hd.mpg.deIII. Physikalisches Institut B, RWTH Aachen University , D-52056 Aachen, GermanyIn the standard picture of Galactic cosmic rays, a diffuse flux of high-energy gamma rays and neutrinos is produced from inelastic collisions of cosmic-ray nuclei with the interstellar gas. The neutrino flux is a guaranteed signal for high-energy neutrino observatories such as IceCube but has not been found yet. Experimental searches for this flux constitute an important test of the standard picture of Galactic cosmic rays. Both observation and nonobservation would allow important implications for the physics of cosmic-ray acceleration and transport. We present CRINGE , a new model of Galactic diffuse high-energy gamma rays and neutrinos, fitted to recent cosmic-ray data from AMS-02, DAMPE, IceTop, as well as KASCADE. We quantify the uncertainties for the predicted emission from the cosmic-ray model but also from the choice of source distribution, gas maps, and cross sections. We consider the possibility of a contribution from unresolved sources. Our model predictions exhibit significant deviations from older models. Our fiducial model is available at https://doi.org/10.5281/zenodo.7859442 https://zenodo.org/record/7859442 .https://doi.org/10.3847/1538-4357/acc1e2Gamma-ray astronomyNeutrino astronomyDiffuse radiationGalactic cosmic rays |
| spellingShingle | Georg Schwefer Philipp Mertsch Christopher Wiebusch Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays The Astrophysical Journal Gamma-ray astronomy Neutrino astronomy Diffuse radiation Galactic cosmic rays |
| title | Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays |
| title_full | Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays |
| title_fullStr | Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays |
| title_full_unstemmed | Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays |
| title_short | Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays |
| title_sort | diffuse emission of galactic high energy neutrinos from a global fit of cosmic rays |
| topic | Gamma-ray astronomy Neutrino astronomy Diffuse radiation Galactic cosmic rays |
| url | https://doi.org/10.3847/1538-4357/acc1e2 |
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