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Hadronic versus Leptonic Models for gamma-Ray Emission from VER J2227+608
Liu, Siming1,2; Zeng, Houdun1,2; Xin, Yuliang1,2; Zhu, Hui3
2020-07-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume897Issue:2Pages:5
AbstractRecent observations of VER J2227+608 reveal a broken power gamma-ray spectrum with the spectral index increasing from similar to 1.8 in the GeV energy range to similar to 2.3 in the TeV range. Such a spectral break can be attributed to radiative energy loss of energetic electrons in the leptonic scenario for the gamma-ray emission, which, in combination with the characteristic age of the nearby pulsar, can be used to constrain the magnetic field in the emission region. We show that the radio and X-ray observations can also be explained in such a scenario. In the hadronic scenario, the spectral break can be attributed to diffusion of energetic ions in a turbulent medium and detailed spectral measurement can be used to constrain the diffusion coefficient. These two models, however, predict drastically different spectra above 100 TeV, which will be uncovered with future high-resolution observations, such as Large High Altitude Air Shower Observatory (LHAASO) and/or Cherenkov Telescope Array (CTA).
KeywordGalactic cosmic rays Gamma-ray sources Non-thermal radiation sources Gamma-ray astronomy Extended radiation sources Supernova remnants Diffuse nebulae Rotation powered pulsars Cosmic ray sources Cosmic ray astronomy Astrophysical processes Ultra-high-energy cosmic radiation
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences
DOI10.3847/2041-8213/ab9ff2
WOS KeywordPULSAR WIND NEBULAE ; GALACTIC-PLANE ; X-RAY ; SUPERNOVA-REMNANTS ; G106.3+2.7 ; DISCOVERY ; ACCELERATION ; FIELD
Language英语
Funding ProjectNational Key R&D Program of China[2018YFA0404203] ; NSFC[U1738122] ; NSFC[U1931204] ; NSFC[U1738125] ; NSFC[U1938112] ; NSFC[11761131007] ; Chinese Postdoctoral Science Foundation[2019M661971] ; Natural Science Foundation for Young Scholars of Jiangsu Province, China[BK20191109] ; International Partnership Program of Chinese Academy of Sciences[114332KYSB20170008]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Chinese Postdoctoral Science Foundation ; Chinese Postdoctoral Science Foundation ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; Natural Science Foundation for Young Scholars of Jiangsu Province, China ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000552735000001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82641
Collection中国科学院国家天文台
Corresponding AuthorLiu, Siming
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210023, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Chinese Acad Sci, Natl Astron Observ, Jia 20 Datun Rd, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liu, Siming,Zeng, Houdun,Xin, Yuliang,et al. Hadronic versus Leptonic Models for gamma-Ray Emission from VER J2227+608[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,897(2):5.
APA Liu, Siming,Zeng, Houdun,Xin, Yuliang,&Zhu, Hui.(2020).Hadronic versus Leptonic Models for gamma-Ray Emission from VER J2227+608.ASTROPHYSICAL JOURNAL LETTERS,897(2),5.
MLA Liu, Siming,et al."Hadronic versus Leptonic Models for gamma-Ray Emission from VER J2227+608".ASTROPHYSICAL JOURNAL LETTERS 897.2(2020):5.
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