KMS National Astronomical Observatories, CAS
| 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 Publication | ASTROPHYSICAL JOURNAL LETTERS
 |
| ISSN | 2041-8205 |
| Volume | 897Issue:2Pages:5 |
| Abstract | Recent 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). |
| Keyword | Galactic 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 Organization | 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 ; 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 |
| DOI | 10.3847/2041-8213/ab9ff2 |
| WOS Keyword | PULSAR WIND NEBULAE ; GALACTIC-PLANE ; X-RAY ; SUPERNOVA-REMNANTS ; G106.3+2.7 ; DISCOVERY ; ACCELERATION ; FIELD |
| Language | 英语 |
| Funding Project | National 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 Organization | 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 ; 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 Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000552735000001 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/82641 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Liu, Siming |
| Affiliation | 1.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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