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Chapter 2 Galactic Gamma-ray Sources

Chinese Physics C 2022年第3期46卷 36-62页

作者： Yang Chen Xiao-Jun Bi Kun Fang Yi-Qing Guo Ye Liu P.H.Thomas Tam S.Vernetto Zhong-Xiang Wang Rui-Zhi Yang Xiao Zhang School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsCASP.O.Box 918Beijing 100049China School of Management Science and Engineering Hebei University of Economics and BusinessShijiazhuangHebei 050061China School of Physics and Astronomy Sun Yat-Sen UniversityGuangzhou 510275China Istituto Nazionale di Astrofisica OATOTorinoItaly Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences80 Nandan RoadShanghai 200030China Department of Astronomy School of Physical SciencesUniversity of Science and Technology of ChinaHefe 230026China CAS Key Laboratory for Research in Galaxies and Cosmology University of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China

In theγ-ray sky,the highest fluxes come from Galactic sources:supernova remnants(SNRs),pulsars and pulsar wind nebulae,star forming regions,binaries and micro-quasars,giant molecular clouds,Galactic center,and the large extended area around the Galactic *** radiation mechanisms ofγ-ray emission and the physics of the emitting particles,such as the origin,acceleration,and propagation,are of very high astrophysical significance.A variety of theoretical models have been suggested for the relevant physics,and emission with energies E≥10^(14) eV are expected to be crucial in testing *** particular,this energy band is a direct window to test at which maximum energy a particle can be accelerated in the Galactic sources and whether the most probable source candidates such as Galactic center and SNRs are“pevatrons”.Designed aiming at the very high energy(VHE,>100 GeV)observation,LHAASO will be a very powerful instrument in these astrophysical *** the past decade,great advances have been made in the VHEγ-ray *** than 170 VHEγ-ray sources have been observed,and among them,42 Galactic sources fall in the LHAASO *** a sensitivity of 10 milli-Crab,LHAASO can not only provide accurate spectra for the knownγ-ray sources,but also search for new TeV-PeVγ-ray *** the following sub-sections,the observation of all the Galactic sources with LHAASO will be discussed in details.

关键词： γ-rays cosmic rays radiation mechanisms pevatrons

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