Multifrequency Study of GHz-peaked Spectrum Sources
文献类型：期刊论文
| 作者 | Sotnikova, Yu, V1; Mufakharov, T., V2,3; Majorova, E. K.1; Mingaliev, M. G.1,2; Udovitskii, R. Yu1; Bursov, N. N.1; Semenova, T. A.1 |
| 刊名 | ASTROPHYSICAL BULLETIN
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 74期号:4页码:348-364 |
| 关键词 | radio continuum: galaxies galaxies: active, nuclei |
| ISSN号 | 1990-3413 |
| DOI | 10.1134/S1990341319040023 |
| 英文摘要 | Gigahertz-Peaked spectrum (GPS) sources are compact active galactic nuclei, presumably young precursors of bright radio sources. The study of GPS radio properties provides information about the features of synchrotron radiation in extragalactic sources. Also in applied research, GPS sources are useful as compact stationary radio sources in the sky for astrometric purposes. This paper presents the results of a multifrequency GPS study based on quasi-simultaneous measurements with the RATAN-600 radio telescope during the 2006-2017 period. A catalog of GPS spectral flux densities at six frequencies-1.1, 2.3, 4.8, 7.7/8.2, 11.2, and 21.7 GHz-is obtained. In addition, for the analysis of radio spectra, data from low-frequency surveys GLEAM(GaLactic and Extragalactic Allsky Murchison widefield array survey) and TGSS (Tata institute for fundamental research GMRT Sky Survey) and high-frequency measurements from Planck survey are used. A total number of 164 GPS and candidates have been identified (17 of them are new discoveries), which makes up a small fraction of GPS in the initial sample of bright AGNs-about 2%. The physical properties and formation conditions of synchrotron radiation is found to be quite different in GPS of different AGNs types. The deficit of distant GPS (z > 2) with low maximum frequencies (less than 1 GHz) has been confirmed. The existing "size-peak frequency" anticorrelation is continuous. The continuum radio spectra are found to become statistically steeper with increasing redshift. |
| WOS关键词 | COMPACT STEEP-SPECTRUM ; VLBA CALIBRATOR SURVEY ; YOUNG RADIO-SOURCES ; HIGH-FREQUENCY PEAKERS ; RCR CATALOG ; GPS SOURCES ; SKY ; SAMPLE ; VARIABILITY ; CONSTRAINTS |
| 资助项目 | Ministry of Science and Higher Education of the Russian Federation ; Kazan (Volga region) Federal University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000511836200002 |
| 出版者 | MAIK NAUKA/INTERPERIODICA/SPRINGER |
| 资助机构 | Ministry of Science and Higher Education of the Russian Federation ; Kazan (Volga region) Federal University ; Ministry of Science and Higher Education of the Russian Federation ; Kazan (Volga region) Federal University ; Ministry of Science and Higher Education of the Russian Federation ; Kazan (Volga region) Federal University ; Ministry of Science and Higher Education of the Russian Federation ; Kazan (Volga region) Federal University |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54138]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Sotnikova, Yu, V |
| 作者单位 | 1.Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia 2.Kazan Volga Reg Fed Univ, Kazan 420008, Russia 3.Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sotnikova, Yu, V,Mufakharov, T., V,Majorova, E. K.,et al. Multifrequency Study of GHz-peaked Spectrum Sources[J]. ASTROPHYSICAL BULLETIN,2019,74(4):348-364. |
| APA | Sotnikova, Yu, V.,Mufakharov, T., V.,Majorova, E. K..,Mingaliev, M. G..,Udovitskii, R. Yu.,...&Semenova, T. A..(2019).Multifrequency Study of GHz-peaked Spectrum Sources.ASTROPHYSICAL BULLETIN,74(4),348-364. |
| MLA | Sotnikova, Yu, V,et al."Multifrequency Study of GHz-peaked Spectrum Sources".ASTROPHYSICAL BULLETIN 74.4(2019):348-364. |
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来源：国家天文台
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