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Related papers: Multi-messenger Implications of Sub-PeV Diffuse Ga…

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IceCube collaboration reported the first high-significance observation of the neutrino emission from the Galactic disk. The observed signal can be due to diffuse emission produced by cosmic rays interacting with interstellar gas but can…

High Energy Astrophysical Phenomena · Physics 2023-10-25 Vittoria Vecchiotti , Francesco L. Villante , Giulia Pagliaroli

The diffuse $\gamma$-ray spectrum at sub-PeV energy region has been measured for the first time by the Tibet-AS$\gamma$ experiment. It will shed new light on the understanding of origin and propagation of Galactic cosmic rays at very high…

High Energy Astrophysical Phenomena · Physics 2022-01-11 Pei-pei Zhang , Bing-qiang Qiao , Qiang Yuan , Shu-wang Cui , Yi-qing Guo

The diffuse Galactic $\gamma$-ray emission originates from the interactions between cosmic rays and the interstellar medium or radiation fields within our Galaxy, where the production of neutrinos is also anticipated. Recently, the Large…

High Energy Astrophysical Phenomena · Physics 2025-01-28 Wenlian Li , Tian-Qi Huang , Donglian Xu , Huihai He

More than 90% of the Galactic gas-related gamma-ray emissivity above 1 GeV is attributed to the decay of neutral pions formed in collisions between cosmic rays and interstellar matter, with lepton-induced processes becoming increasingly…

High Energy Astrophysical Phenomena · Physics 2019-08-13 C. D. Dermer , A. W. Strong , E. Orlando , L. Tibaldo

The Tibet AS$\gamma$ experiment provided the first measurement of the total diffuse gamma-ray emission from the Galactic disk in the sub-PeV energy range. Based on the analysis of TeV sources included in the HGPS catalog, we predict the…

High Energy Astrophysical Phenomena · Physics 2023-02-03 V. Vecchiotti , F. Zuccarini , F. L. Villante , G. Pagliaroli

The LHAASO Collaboration has recently reported a measurement of the diffuse gamma-ray emission from the Galactic Plane at energies between 10 TeV and 1 PeV. While this emission is brighter than that expected from cosmic-ray interactions in…

High Energy Astrophysical Phenomena · Physics 2024-10-18 Ariane Dekker , Ian Holst , Dan Hooper , Giovani Leone , Emily Simon , Huangyu Xiao

The Tibet AS$\gamma$ and LHAASO collaborations recently reported the observation of a $\gamma$-ray diffuse emission with energy up to the PeV from the Galactic plane. We discuss the relevance of non-uniform cosmic-ray transport scenarios…

High Energy Astrophysical Phenomena · Physics 2023-04-05 Pedro De la Torre Luque , Daniele Gaggero , Dario Grasso , Ottavio Fornieri , Kathrin Egberts , Constantin Steppa , Carmelo Evoli

The diffuse gamma-ray emission between 10 and 1000 TeV from the Galactic plane was recently measured by the Large High Altitude Air Shower Observatory (LHAASO). These observations will help tremendously in constraining the propagation and…

High Energy Astrophysical Phenomena · Physics 2023-11-06 Rui Zhang , Xiaoyuan Huang , Zhi-Hui Xu , Shiping Zhao , Qiang Yuan

Diffuse $\gamma$-ray emission produced by the interaction of cosmic-ray particles with matter and radiation in the Galaxy can be used to probe the distribution of cosmic rays and their sources in different regions of the Galaxy. With its…

Diffuse emission in gamma-rays and neutrinos are produced by the interaction of cosmic rays with the interstellar medium. Below some hundreds of TeV, the sources of these cosmic rays are most likely Galactic. Hence, observations of…

High Energy Astrophysical Phenomena · Physics 2025-09-25 Anton Stall , Philipp Mertsch

The IceCube Collaboration has recently reported evidence for a high-energy extraterrestrial neutrino flux. During two years of operation 28 events with energies between 30 TeV and 1.2 PeV were observed while only 10.6 events were expected…

High Energy Astrophysical Phenomena · Physics 2014-07-16 Markus Ahlers , Kohta Murase

We calculate the fluxes of neutrinos and gamma rays from interactions of cosmic rays with interstellar matter in our galaxy. We use EPOS-LHC, SIBYLL and GHEISHA to obtain the yield of these particles in proton, helium and iron collisions at…

High Energy Astrophysical Phenomena · Physics 2017-03-15 J. M. Carceller , M. Masip

The bulk of the diffuse galactic gamma-ray emission above a few tens of GeV has been conventionally ascribed to the decay of neutral pions produced in cosmic-ray interactions with interstellar matter. Cosmic-ray electrons may, however, make…

Astrophysics · Physics 2008-11-26 T. A. Porter , R. J. Protheroe

Recently, the MILAGRO collaboration reported on the detection of a diffuse multi-TeV emission from a region of the Galactic disk close to the inner Galaxy. The emission is in excess of what is predicted by conventional models for cosmic ray…

Astrophysics · Physics 2015-06-30 S. Gabici , A. M. Taylor , R. J. White , S. Casanova , F. A. Aharonian

A Galactic cosmic-ray transport model featuring non-homogeneous transport has been developed over the latest years. This setup is aimed at reproducing gamma-ray observations in different regions of the Galaxy (with particular focus on the…

High Energy Astrophysical Phenomena · Physics 2022-10-18 Pedro De la Torre Luque , Daniele Gaggero , Dario Grasso

The very high energy Galactic $\gamma$-ray sky is partially opaque in the ($0.1-10$) PeV energy range. In the light of the recently detected high energy neutrino flux by IceCube, a comparable very high energy $\gamma$-ray flux is expected…

High Energy Physics - Phenomenology · Physics 2015-10-09 Arman Esmaili , Pasquale Dario Serpico

Motivated by the difference between the fluxes of sub-PeV Galactic diffuse gamma-ray emission (GDE) measured by the Tibet AS$\gamma$ experiment and the LHAASO collaboration, our study constrains the contribution to the GDE flux measured by…

High Energy Astrophysical Phenomena · Physics 2024-12-09 S. Kato , M. Anzorena , D. Chen , K. Fujita , R. Garcia , J. Huang , G. Imaizumi , T. Kawashima , K. Kawata , A. Mizuno , M. Ohnishi , T. Sako , T. K. Sako , F. Sugimoto , M. Takita , Y. Yokoe

We report, for the first time, the long-awaited detection of diffuse gamma rays with energies between 100 TeV and 1 PeV in the Galactic disk. Particularly, all gamma rays above 398 TeV are observed apart from known TeV gamma-ray sources and…

The diffuse gamma-ray emission from the Milky Way serves as a crucial probe for understanding the propagation and interactions of cosmic rays within our galaxy. The Galactic diffuse gamma-ray emission between 10 TeV and 1 PeV has been…

High Energy Astrophysical Phenomena · Physics 2025-01-07 Jiayin He , Houdun Zeng , Yi Zhang , Qiang Yuan , Rui Zhang , Jun Li

The IceCube Neutrino Observatory has recently reported strong evidence for neutrino emission from the Galactic plane. The signal is consistent with model predictions of diffuse emission from cosmic ray propagation in the interstellar…

High Energy Astrophysical Phenomena · Physics 2024-02-09 Antonio Ambrosone , Kathrine Mørch Groth , Enrico Peretti , Markus Ahlers