Comparative study of gamma-ray emission from molecular clouds and star-forming galaxies
文献类型：期刊论文
| 作者 | Peng, Fang-Kun2,3,4,5; Xi, Shao-Qiang3,5; Wan, Ang-Yu3,5; Zhi, Qi-Jun2; Li, Di1,6
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2019-01-10 |
| 卷号 | 621页码:8 |
| 关键词 | cosmic rays ISM: clouds gamma rays: ISM methods: statistical |
| ISSN号 | 1432-0746 |
| DOI | 10.1051/0004-6361/201833859 |
| 英文摘要 | Star-forming regions on different scales, such as giant molecular clouds in our Galaxy and star-forming galaxies, emit GeV gamma-rays. These are thought to originate from hadronic interactions of cosmic-ray (CR) nuclei with the interstellar medium. It has recently been shown that the gamma-ray luminosity (L gamma) of star-forming galaxies is well correlated with their star formation rates (SFR). We investigated Fermi data of eight Galactic molecular clouds in the Gould belt and found that molecular clouds do not follow the L gamma - SFR correlation of star-forming galaxies. We also compared the scaling relations of gamma-ray luminosity, SFR, and the gas mass for molecular clouds and star-forming galaxies. Using a multiple-variable regression analysis, we found different dependences of gamma-ray emission on SFR or mass for molecular clouds and star-forming galaxies. This suggests that different mechanisms may govern the production of gamma-rays in these two types of sources. Specifically, the strong dependence on mass supports that gammaray emission of molecular clouds primarily comes from passive interaction by diffuse Galactic CRs, whereas the strong dependence on SFR supports that gamma-ray emission of star-forming galaxies originates from CRs that are accelerated by local active sources. |
| WOS关键词 | LARGE-AREA TELESCOPE ; SMALL-MAGELLANIC-CLOUD ; FERMI-LAT ; LINEAR-REGRESSION ; FORMATION RATES ; MONOCEROS R2 ; COSMIC-RAYS ; MILKY-WAY ; GAS ; STARBURST |
| 资助项目 | National Key R & D program of China[2018YFA0404203] ; National Key R & D program of China[2017YFA0402600] ; NSFC[11625312] ; NSFC[11851304] ; NSFC[U1731238] ; NSFC[11565010] ; NSFC[11725313] ; Doctoral Starting up Foundation of Guizhou Normal University[GZNUD[2017] 33] ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; science and technology innovation talent team[(2015) 0415] ; Innovation Team Foundation of the Education Department of Guizhou Province[[2014] 35] ; International Partnership Program of Chinese Academy of Sciences[114A11KYSB20160008] ; CAS Strategic Priority Research Program[XDB23000000] ; [(2016)-4008] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000455270600001 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Key R & D program of China ; National Key R & D program of China ; NSFC ; NSFC ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; science and technology innovation talent team ; science and technology innovation talent team ; Innovation Team Foundation of the Education Department of Guizhou Province ; Innovation Team Foundation of the Education Department of Guizhou Province ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; CAS Strategic Priority Research Program ; CAS Strategic Priority Research Program ; National Key R & D program of China ; National Key R & D program of China ; NSFC ; NSFC ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; science and technology innovation talent team ; science and technology innovation talent team ; Innovation Team Foundation of the Education Department of Guizhou Province ; Innovation Team Foundation of the Education Department of Guizhou Province ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; CAS Strategic Priority Research Program ; CAS Strategic Priority Research Program ; National Key R & D program of China ; National Key R & D program of China ; NSFC ; NSFC ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; science and technology innovation talent team ; science and technology innovation talent team ; Innovation Team Foundation of the Education Department of Guizhou Province ; Innovation Team Foundation of the Education Department of Guizhou Province ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; CAS Strategic Priority Research Program ; CAS Strategic Priority Research Program ; National Key R & D program of China ; National Key R & D program of China ; NSFC ; NSFC ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; open project of Guangxi Key Laboratory for Relativistic Astrophysics ; science and technology innovation talent team ; science and technology innovation talent team ; Innovation Team Foundation of the Education Department of Guizhou Province ; Innovation Team Foundation of the Education Department of Guizhou Province ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; CAS Strategic Priority Research Program ; CAS Strategic Priority Research Program |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24754]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Peng, Fang-Kun |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Guizhou, Peoples R China 3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 4.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 5.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China 6.Chinese Acad Sci, CAS Key Lab FAST, NAOC, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Fang-Kun,Xi, Shao-Qiang,Wan, Ang-Yu,et al. Comparative study of gamma-ray emission from molecular clouds and star-forming galaxies[J]. ASTRONOMY & ASTROPHYSICS,2019,621:8. |
| APA | Peng, Fang-Kun,Xi, Shao-Qiang,Wan, Ang-Yu,Zhi, Qi-Jun,&Li, Di.(2019).Comparative study of gamma-ray emission from molecular clouds and star-forming galaxies.ASTRONOMY & ASTROPHYSICS,621,8. |
| MLA | Peng, Fang-Kun,et al."Comparative study of gamma-ray emission from molecular clouds and star-forming galaxies".ASTRONOMY & ASTROPHYSICS 621(2019):8. |
入库方式： OAI收割
来源：国家天文台
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