Galactic synchrotron distribution derived from 152 H II region absorption features in the full GLEAM survey
文献类型：期刊论文
| 作者 | Su, H.1,2,3; Macquart, J. P.2; Hurley-Walker, N.2; McClure-Griffiths, N. M.4; Jackson, C. A.5; Tingay, S. J.2; Tian, W. W.1,3,6; Gaensler, B. M.7,8,9; McKinley, B.2,8; Kapinska, A. D.10,11 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 479期号:3页码:4041-4055 |
| ISSN号 | 0035-8711 |
| 关键词 | cosmic rays H II regions Galaxy: structure radio continuum: general |
| DOI | 10.1093/mnras/sty1732 |
| 英文摘要 | We derive the synchrotron distribution in the Milky Way disc from H II region absorption observations over -40 degrees < l < 40 degrees at six frequencies of 76.2, 83.8, 91.5, 99.2, 106.9, and 114.6 MHz with the GaLactic and Extragalactic All-sky Murchison widefield array survey (GLEAM). We develop a new method of emissivity calculation by taking advantage of the Haslam et al. (1981) map and known spectral indices, which enable us to simultaneously derive the emissivity and the optical depth of H II regions at each frequency. We show our derived synchrotron emissivities based on 152 absorption features of H II regions using both the method previously adopted in the literature and our improved method. We derive the synchrotron emissivity from H II regions to the Galactic edge along the line of sight and, for the first time, derive the emissivity from H II regions to the Sun. These results provide direct information on the distribution of the Galactic magnetic field and cosmic ray electrons for future modelling. |
| WOS关键词 | MURCHISON WIDEFIELD ARRAY ; MAGNETIC-FIELD ; ROTATION MEASURES ; RADIO-EMISSION ; MILKY-WAY ; 10 MHZ ; GALAXY ; 408-MHZ ; CATALOG ; LOFAR |
| 资助项目 | Australian Government (NCRIS) ; Western Australian Government ; Australian Government ; NSFC[11473038] ; NSFC[11273025] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000441382300087 |
| 资助机构 | Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; NSFC ; NSFC ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; NSFC ; NSFC ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; NSFC ; NSFC ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; NSFC ; NSFC |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/22521]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Su, H.; Macquart, J. P.; Hurley-Walker, N. |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia 5.Netherlands Inst Radio Astron, ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands 6.Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada 7.Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia 8.ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW 2006, Australia 9.Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada 10.Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia |
| 推荐引用方式 GB/T 7714 | Su, H.,Macquart, J. P.,Hurley-Walker, N.,et al. Galactic synchrotron distribution derived from 152 H II region absorption features in the full GLEAM survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,479(3):4041-4055. |
| APA | Su, H..,Macquart, J. P..,Hurley-Walker, N..,McClure-Griffiths, N. M..,Jackson, C. A..,...&Zheng, Q..(2018).Galactic synchrotron distribution derived from 152 H II region absorption features in the full GLEAM survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,479(3),4041-4055. |
| MLA | Su, H.,et al."Galactic synchrotron distribution derived from 152 H II region absorption features in the full GLEAM survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 479.3(2018):4041-4055. |
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来源：国家天文台
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