Related papers: Diffuse Galactic Soft Gamma-Ray Emission

Obtaining cosmic ray propagation parameters from diffuse VHE gamma ray emission from the Galactic center ridge

The recent discovery of diffuse, VHE gamma radiation from the Galactic center ridge by the H.E.S.S. telescope allow for the first time the direct determination of parameters of galactic cosmic ray propagation models. In this paper we show…

Astrophysics · Physics 2008-11-26 I. Büsching , O. C. de Jager , J. Snyman

Diffuse Synchrotron Emission from Galactic Cosmic Ray Electrons

Synchrotron diffuse radiation (SDR) emission is one of the major Galactic components, in the 100 MHz up to 100 GHz frequency range. Its spectrum and sky map provide valuable measure of the galactic cosmic ray electrons (GCRE) in the…

High Energy Astrophysical Phenomena · Physics 2018-11-08 Giuseppe Di Bernardo , Dario Grasso , Carmelo Evoli , Daniele Gaggero

Contribution of point sources to the soft gamma-ray Galactic emission

The nature of the soft gamma-ray (20-200 keV) Galactic emission has been a matter of debate for a long time. Previous experiments have tried to separate the point source contribution from the real interstellar emission, but with a rather…

Astrophysics · Physics 2007-05-23 Regis Terrier , Francois Lebrun , Guillaume Belanger , Andrea Goldwurm , Andrew W. Strong , Volker Schoenfelder , Laurent Bouchet , Jean-Pierre Roques , Arvind Parmar

Diffuse Gamma Flux from Antiproton Annihilation in our Galaxy

The all-sky survey in high-energy gamma rays (E > 30 MeV) carried out by the Energetic Gamma Ray Experiment Telescope (EGRET) aboard the Compton Gamma-Ray Observatory provides a unique opportunity to examine in detail the diffuse gamma-ray…

Astrophysics · Physics 2011-04-15 Yu. A. Golubkov , M. Yu. Khlopov

Measurement of Very-high-energy Diffuse Gamma-ray Emissions from the Galactic Plane with LHAASO-WCDA

The diffuse Galactic gamma-ray emission is a very important tool used to study the propagation and interaction of cosmic rays in the Milky Way. In this work, we report the measurements of the diffuse emission from the Galactic plane,…

High Energy Astrophysical Phenomena · Physics 2026-01-08 The LHAASO Collaboration , Zhen Cao , F. Aharonian , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , W. Bian , A. V. Bukevich , C. M. Cai , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , H. X. Chen , Liang Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , X. B. Chen , X. J. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. C. Chu , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , Y. X. Diao , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , J. H. Fang , K. Fang , C. F. Feng , H. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , T. T. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , J. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , O. A. Hannuksela , M. Hasan , H. H. He , H. N. He , J. Y. He , X. Y. He , Y. He , S. Hernández-Cadena , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , S. C. Hu , C. Huang , D. H. Huang , J. J. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Y. Y. Huang , X. L. Ji , H. Y. Jia , K. Jia , H. B. Jiang , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , S. Kaci , M. M. Kang , I. Karpikov , D. Khangulyan , D. Kuleshov , K. Kurinov , B. B. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , Jian Li , Jie Li , K. Li , L. Li , R. L. Li , S. D. Li , T. Y. Li , W. L. Li , X. R. Li , Xin Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , D. B. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. R. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , X. Liu , Y. Liu , Y. Liu , Y. N. Liu , Y. Q. Lou , Q. Luo , Y. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , Z. Min , W. Mitthumsiri , G. B. Mou , H. J. Mu , Y. C. Nan , A. Neronov , K. C. Y. Ng , M. Y. Ni , L. Nie , L. J. Ou , P. Pattarakijwanich , Z. Y. Pei , J. C. Qi , M. Y. Qi , J. J. Qin , A. Raza , C. Y. Ren , D. Ruffolo , A. Sáiz , M. Saeed , D. Semikoz , L. Shao , O. Shchegolev , Y. Z. Shen , X. D. Sheng , Z. D. Shi , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , D. X. Sun , H. Sun , Q. N. Sun , X. N. Sun , Z. B. Sun , N. H. Tabasam , J. Takata , P. H. T. Tam , H. B. Tan , Q. W. Tang , R. Tang , Z. B. Tang , W. W. Tian , C. N. Tong , L. H. Wan , C. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , K. Wang , Kai Wang , Kai Wang , L. P. Wang , L. Y. Wang , L. Y. Wang , R. Wang , W. Wang , X. G. Wang , X. J. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Z. H. Wang , Z. X. Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , S. S. Weng , C. Y. Wu , H. R. Wu , Q. W. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , Y. L. Xin , Y. Xing , D. R. Xiong , Z. Xiong , D. L. Xu , R. F. Xu , R. X. Xu , W. L. Xu , L. Xue , D. H. Yan , J. Z. Yan , T. Yan , C. W. Yang , C. Y. Yang , F. F. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , W. X. Yang , Y. H. Yao , Z. G. Yao , X. A. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , M. Zha , B. B. Zhang , B. T. Zhang , F. Zhang , H. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , Li Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. R. Zhang , S. S. Zhang , W. Y. Zhang , X. Zhang , X. P. Zhang , Yi Zhang , Yong Zhang , Z. P. Zhang , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , X. H. Zhao , Z. H. Zhao , F. Zheng , W. J. Zhong , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , X. X. Zhou , B. Y. Zhu , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , Y. C. Zou , X. Zuo

Evidence for a discrete source contribution to low-energy continuum Galactic gamma-rays

Models for the diffuse Galactic continuum emission and synchrotron radiation show that it is difficult to reproduce observations of both of these from the same population of cosmic-ray electrons. This indicates that an important contributor…

Astrophysics · Physics 2009-10-31 A. W. Strong , I. V. Moskalenko

Puzzles of Galactic continuum gamma rays

Inverse Compton scattering appears to play a more important role in the diffuse Galactic continuum emission than previously thought, from MeV to GeV energies. We compare models having a large inverse Compton component with EGRET data, and…

Astrophysics · Physics 2007-05-23 I. V. Moskalenko , A. W. Strong

X-ray and soft gamma-ray behaviour of the Galactic source 1E 1743.1-2843

The X-ray persistent source 1E 1743.1-2843, located in the Galactic Centre region, has been detected by all X-ray telescope above 2 keV, whereas it is not visible in the soft X-rays (i. e. Rosat) because of the high column density along the…

Astrophysics · Physics 2007-05-23 M. Del Santo , L. Sidoli , A. Bazzano , M. Cocchi , G. De Cesare , A. Paizis , P. Ubertini

Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data

The Galactic gamma-ray diffuse emission (GDE) is emitted by cosmic rays (CRs), ultra-relativistic protons and electrons, interacting with gas and electromagnetic radiation fields in the interstellar medium. Here we present the analysis of…

High Energy Astrophysical Phenomena · Physics 2023-10-16 R. Alfaro , C. Alvarez , J. C. Arteaga-Velazquez , K. P. Arunbabu , D. Avila Rojas , R. Babu , V. Baghmanyan , E. Belmont-Moreno , C. Brisbois , K. S. Caballero-Mora , T. Capistran , A. Carraminana , S. Casanova , O. Chaparro-Amaro , U. Cotti , J. Cotzomi , S. Coutino de Leon , E. De la Fuente , R. Diaz Hernandez , M. A. DuVernois , M. Durocher , J. C. Dıaz-Velez , K. Engel , C. Espinoza , K. L. Fan , N. Fraija , A. Galvan-Gamez , J. A. Garcıa-Gonzalez , F. Garfias , M. M. Gonzalez , J. A. Goodman , S. Hernandez , B. Hona , D. Huang , F. Hueyotl-Zahuantitla , T. B. Humensky , A. Iriarte , V. Joshi , S. Kaufmann , D. Kieda , G. J. Kunde , A. Lara , H. Leon Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , J. Martınez-Castro , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafa , A. Nayerhoda , L. Nellen , R. Noriega-Papaqui , E. G. Perez-Perez , D. Rosa-Gonzalez , E. Ruiz-Velasco , H. Salazar , D. Salazar-Gallegos , F. Salesa Greus , A. Sandoval , J. Serna-Franco , A. J. Smith , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , F. Urena-Mena , L. Villasenor , E. Willox , H. Zhou , C. de Leon , O. Fornieri , D. Gaggero , D. Grasso , A. Marinelli , S. Ventura

A Measurement of the Spatial Distribution of Diffuse TeV Gamma Ray Emission from the Galactic Plane with Milagro

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…

Astrophysics · Physics 2014-11-18 A. A. Abdo , B. Allen , T. Aune , D. Berley , E. Blaufuss , S. Casanova , C. Chen , B. L. Dingus , R. W. Ellsworth , L. Fleysher , R. Fleysher , M. M. Gonzalez , J. A. Goodman , C. M. Hoffman , P. H. H"untemeyer , B. E. Kolterman , C. P. Lansdell , J. T. Linnemann , J. E. McEnery , A. I. Mincer , I. V. Moskalenko , P. Nemethy , D. Noyes , T. A. Porter , J. Pretz , J. M. Ryan , P. M. Saz Parkinson , A. Shoup , G. Sinnis , A. J. Smith , A. W. Strong , G. W. Sullivan , V. Vasileiou , G. P. Walker , D. A. Williams , G. B. Yodh

The Galactic Diffuse Gamma-ray Spectrum from Cosmic-ray Proton Interactions

A new calculation of the Galactic diffuse gamma-ray spectrum from the decay of secondary particles produced by interactions of cosmic-ray protons with interstellar matter is presented. The calculation utilizes the modern Monte Carlo event…

Astrophysics · Physics 2009-10-28 Masaki Mori

The properties of the Galactic Hard X-Ray and soft gamma-ray Background based on 20 years of INTEGRAL/IBIS observations

We present results of a study of the Galactic hard X-ray and soft gamma-ray background emission performed with the IBIS telescope aboard the INTEGRAL observatory using data obtained over more than 20 years of operations. The study of the…

High Energy Astrophysical Phenomena · Physics 2024-12-30 Roman Krivonos , Ekaterina Shtykovskaya , Sergey Sazonov

First Detection of sub-PeV Diffuse Gamma Rays from the Galactic Disk: Evidence for Ubiquitous Galactic Cosmic Rays beyond PeV Energies

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…

High Energy Astrophysical Phenomena · Physics 2021-05-18 M. Amenomori , Y. W. Bao , X. J. Bi , D. Chen , T. L. Chen , W. Y. Chen , Xu Chen , Y. Chen , Cirennima , S. W. Cui , Danzengluobu , L. K. Ding , J. H. Fang , K. Fang , C. F. Feng , Zhaoyang Feng , Z. Y. Feng , Qi Gao , Q. B. Gou , Y. Q. Guo , Y. Y. Guo , H. H. He , Z. T. He , K. Hibino , N. Hotta , Haibing Hu , H. B. Hu , J. Huang , H. Y. Jia , L. Jiang , H. B. Jin , K. Kasahara , Y. Katayose , C. Kato , S. Kato , K. Kawata , W. Kihara , Y. Ko , M. Kozai , Labaciren , G. M. Le , A. F. Li , H. J. Li , W. J. Li , Y. H. Lin , B. Liu , C. Liu , J. S. Liu , M. Y. Liu , W. Liu , Y. -Q. Lou , H. Lu , X. R. Meng , K. Munakata , H. Nakada , Y. Nakamura , H. Nanjo , M. Nishizawa , M. Ohnishi , T. Ohura , S. Ozawa , X. L. Qian , X. B. Qu , T. Saito , M. Sakata , T. K. Sako , J. Shao , M. Shibata , A. Shiomi , H. Sugimoto , W. Takano , M. Takita , Y. H. Tan , N. Tateyama , S. Torii , H. Tsuchiya , S. Udo , H. Wang , H. R. Wu , L. Xue , Y. Yamamoto , Z. Yang , Y. Yokoe , A. F. Yuan , L. M. Zhai , H. M. Zhang , J. L. Zhang , X. Zhang , X. Y. Zhang , Y. Zhang , Yi Zhang , Ying Zhang , S. P. Zhao , Zhaxisangzhu , X. X. Zhou

Diffuse Galactic gamma rays, cosmic-ray nucleons and antiprotons

The excess of continuum gamma-ray emission from the Galaxy above 1 GeV is an unsolved puzzle. It may indicate that the interstellar nucleon or electron spectra are harder than local direct measurements, as could be the case if a local…

Astrophysics · Physics 2011-05-23 I. V. Moskalenko , A. W. Strong , O. Reimer

An Unidentified Variable Gamma-Ray Source near the Galactic Plane Detected by COMPTEL

We report the detection of an unidentified gamma-ray source near the Galactic plane by the COMPTEL experiment aboard the Compton Gamma-Ray Observatory. The source is detected at a significance level of ~ 7.2 sigma in the energy range 1-3…

Astrophysics · Physics 2009-11-07 S. Zhang , W. Collmar , V. Schonfelder

A New Determination Of The Diffuse Galactic and Extragalactic Gamma-Ray Emission

The GALPROP model for cosmic-ray propagation is able to make explicit predictions for the distribution of galactic diffuse gamma-rays. We compare different propagation models with gamma-ray spectra measured by EGRET for various regions of…

Astrophysics · Physics 2009-11-11 Andrew W. Strong , Igor V. Moskalenko , Olaf Reimer

The origin of MeV gamma-ray diffuse emission from the inner Galactic region

The origin of the inner Galactic emission, measured by COMPTEL with a flux of $\sim ~ 10^{-2}$ MeV cm$^{-2}$ s$^{-1}$ sr$^{-1}$ in the 1-30 MeV range, has remained unsettled since its discovery in 1994. We investigate the origin of this…

High Energy Astrophysical Phenomena · Physics 2023-06-02 Naomi Tsuji , Yoshiyuki Inoue , Hiroki Yoneda , Reshmi Mukherjee , Hirokazu Odaka

Dissecting the Diffuse Emission of the Galaxy with the HAWC Observatory

Galactic diffuse gamma-ray emission is produced by the interaction of high-energy cosmic rays propagating through the Milky Way with interstellar gas and radiation fields. Its measurement can provide crucial insights into the acceleration…

High Energy Astrophysical Phenomena · Physics 2025-09-04 Georg Schwefer

The Nature of Unresolved Soft X-ray Emission from the Galactic Disk

Although about 40% of the soft X-ray background emission in 0.4 to 1 keV range has extragalactic origins and thus is totally blocked by the Galactic absorption in midplane directions, it decreases at most by about 20 % in midplane. Suzaku…

Astrophysics · Physics 2008-10-14 K. Masui , K. Mitsuda , N. Y. Yamasaki , Y. Takei , S. Kimura , T. Yoshino , D. McCammon

Gamma Rays frim the Galactic Centre

Recent results from the HESS gamma ray telescope have shown the presence of both a diffuse, extended, flux of gamma rays above ~0.4 TeV and discrete sources in and near the Galactic Centre. Here, we put forward a possible explanation in…

Astrophysics · Physics 2009-06-23 A. D. Erlykin , A. W. Wolfendale