On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment
Potential contribution from gamma-ray sources to the Galactic diffuse gamma rays observed above 100 TeV (sub-PeV energy range) by the Tibet AS γ experiment is an important key to interpreting recent multimessenger observations. This paper reveals a surprising fact: none of the 23 Tibet AS γ diffuse...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ad19d2 |
| _version_ | 1827381462463152128 |
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| author | S. Kato D. Chen J. Huang T. Kawashima K. Kawata A. Mizuno M. Ohnishi T. Sako T. K. Sako M. Takita Y. Yokoe |
| author_facet | S. Kato D. Chen J. Huang T. Kawashima K. Kawata A. Mizuno M. Ohnishi T. Sako T. K. Sako M. Takita Y. Yokoe |
| author_sort | S. Kato |
| collection | DOAJ |
| description | Potential contribution from gamma-ray sources to the Galactic diffuse gamma rays observed above 100 TeV (sub-PeV energy range) by the Tibet AS γ experiment is an important key to interpreting recent multimessenger observations. This paper reveals a surprising fact: none of the 23 Tibet AS γ diffuse gamma-ray events above 398 TeV within the Galactic latitudinal range of ∣ b ∣ < 10° come from the 43 sub-PeV gamma-ray sources reported in the 1LHAASO catalog, which proves that these sources are not the origins of the Tibet AS γ diffuse gamma-ray events. No positional overlap between the Tibet AS γ diffuse gamma-ray events and the sub-PeV LHAASO sources currently supports the diffusive nature of the Tibet AS γ diffuse gamma-ray events, although their potential origin in the gamma-ray sources yet unresolved in the sub-PeV energy range cannot be ruled out. |
| first_indexed | 2024-03-08T13:56:34Z |
| format | Article |
| id | doaj.art-e3c872948e3f41c4a71fef46f314491d |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-08T13:56:34Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-e3c872948e3f41c4a71fef46f314491d2024-01-15T13:45:03ZengIOP PublishingThe Astrophysical Journal Letters2041-82052024-01-019611L1310.3847/2041-8213/ad19d2On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ ExperimentS. Kato0https://orcid.org/0000-0003-1043-2803D. Chen1J. Huang2T. Kawashima3K. Kawata4https://orcid.org/0000-0001-6332-2005A. Mizuno5https://orcid.org/0009-0001-2494-4992M. Ohnishi6T. Sako7T. K. Sako8M. Takita9Y. Yokoe10Institute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpNational Astronomical Observatories, Chinese Academy of Sciences , Beijing 100012, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpInstitute for Cosmic Ray Research, University of Tokyo , Kashiwa 277-8582, Japan ; katosei@icrr.u-tokyo.ac.jpPotential contribution from gamma-ray sources to the Galactic diffuse gamma rays observed above 100 TeV (sub-PeV energy range) by the Tibet AS γ experiment is an important key to interpreting recent multimessenger observations. This paper reveals a surprising fact: none of the 23 Tibet AS γ diffuse gamma-ray events above 398 TeV within the Galactic latitudinal range of ∣ b ∣ < 10° come from the 43 sub-PeV gamma-ray sources reported in the 1LHAASO catalog, which proves that these sources are not the origins of the Tibet AS γ diffuse gamma-ray events. No positional overlap between the Tibet AS γ diffuse gamma-ray events and the sub-PeV LHAASO sources currently supports the diffusive nature of the Tibet AS γ diffuse gamma-ray events, although their potential origin in the gamma-ray sources yet unresolved in the sub-PeV energy range cannot be ruled out.https://doi.org/10.3847/2041-8213/ad19d2Galactic cosmic raysGamma-ray astronomy |
| spellingShingle | S. Kato D. Chen J. Huang T. Kawashima K. Kawata A. Mizuno M. Ohnishi T. Sako T. K. Sako M. Takita Y. Yokoe On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment The Astrophysical Journal Letters Galactic cosmic rays Gamma-ray astronomy |
| title | On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment |
| title_full | On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment |
| title_fullStr | On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment |
| title_full_unstemmed | On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment |
| title_short | On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment |
| title_sort | on the source contribution to the galactic diffuse gamma rays above 398 tev detected by the tibet asγ experiment |
| topic | Galactic cosmic rays Gamma-ray astronomy |
| url | https://doi.org/10.3847/2041-8213/ad19d2 |
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