典型文献
Galactic cosmic ray propagation:sub-PeV diffuse gamma-ray and neutrino emission
文献摘要：
The Tibet ASγ experiment just reported their measurement of sub-PeV dif-fuse gamma-ray emission from the Galactic disk,with the highest energy up to 957 TeV.These diffuse gamma rays are most likely the hadronic origin by cosmic ray(CR)interaction with interstellar gas in the galaxy.This mea-surement provides direct evidence to the hypothesis that the Galactic Cos-mic Rays(GCRs)can be accelerated beyond PeV energies.In this work,we try to explain the sub-PeV diffuse gamma-ray spectrum with different CR propagation models.We find that there is a tension between the sub-PeV diffuse gamma-ray and the local CR spectrum.To describe the sub-PeV dif-fuse gamma-ray flux,it generally requires larger local CR flux than measure-ment in the knee region.We further calculate the PeV neutrino flux from the CR propagation model.Even all of these sub-PeV diffuse gamma rays originate from the propagation,the Galactic Neutrinos(GNs)only account for less than～15％of observed flux,most of which are still from extragalac-tic sources.
文献关键词：
中图分类号：
作者姓名：
Bing-Qiang Qiao;Wei Liu;Meng-Jie Zhao;Xiao-Jun Bi;Yi-Qing Guo
作者机构：
Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Bing-Qiang Qiao;Wei Liu;Meng-Jie Zhao;Xiao-Jun Bi;Yi-Qing Guo-.Galactic cosmic ray propagation:sub-PeV diffuse gamma-ray and neutrino emission)[J].物理学前沿,2022(04):5-14
A类：
GCRs,Neutrinos,extragalac
B类：
Galactic,cosmic,propagation,sub,PeV,diffuse,gamma,neutrino,emission,Tibet,AS,experiment,just,reported,their,measurement,from,disk,highest,energy,up,TeV,These,rays,are,most,likely,hadronic,by,interaction,interstellar,gas,galaxy,This,provides,direct,evidence,hypothesis,that,Cos,Rays,can,accelerated,beyond,energies,In,this,work,try,explain,spectrum,different,models,We,find,there,tension,between,local,To,describe,flux,generally,requires,larger,than,knee,region,further,calculate,Even,these,originate,GNs,only,account,less,observed,which,still,sources
AB值：
0.4532
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