Simultaneous spectra and radio properties of BL Lacs
文献类型：期刊论文
| 作者 | Mingaliev, M.3,4; Sotnikova, Yu.4; Mufakharov, T.1; Nieppola, E.2,6; Tornikoski, M.2; Tammi, J.2,5; Lahteenmaki, A.2,5; Udovitskiy, R.4; Erkenov, A.4 |
| 刊名 | ASTRONOMISCHE NACHRICHTEN
 |
| 出版日期 | 2017-07-01 |
| 卷号 | 338期号:6页码:700-714 |
| ISSN号 | 0004-6337 |
| 关键词 | Galaxies: Bl Lacertae Objects: General Galaxies: Active Radio Continuum: Galaxies |
| DOI | 10.1002/asna.201713361 |
| 英文摘要 | We present the results of 9 years of the blazar observing program at the RATAN-600 radio telescope (2005-2015). The data were obtained at six frequency bands (1.1, 2.3, 4.8, 7.7, 11.2, and 21.7 GHz) for 290 blazars, mostly BL Lacs. In addition, we used data at 37 GHz obtained quasi-simultaneously with the Metsahovi radio observatory for some sources. The sample includes blazars of three types: high-synchrotron peaked (HSP), low-synchrotron peaked (LSP), and intermediate-synchrotron peaked (ISP). We present several epochs of flux density measurements, simultaneous radio spectra, spectral indices, and properties of their variability. The analysis of the radio properties of different classes of blazars showed that LSP and HSP BL Lac blazars are quite different objects, on average. LSPs have higher flux densities and flatter spectra, and their variability increases as higher frequencies are considered. On the other hand, HSPs are very faint in the radio domain and tend to have steep low-frequency spectra, and they are less variable than LSPs at all frequencies. Another result is the spectral flattening above 7.7 GHz detected in HSPs, while an average LSP spectrum typically remains flat at both the low and high frequency ranges we considered. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| WOS记录号 | WOS:000408308300007 |
| 源URL | [http://119.78.226.72/handle/331011/32549]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Sotnikova, Yu. |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 2.Aalto Univ, Metsahovi Radio Observ, Kylmala, Finland 3.Kazan Fed Univ, Minist Educ & Sci Russian Federat, Kazan, Russia 4.RAS, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia 5.Aalto Univ, Dept Elect & Nanoengn, Aalto, Finland 6.Univ Turku, ESO FINCA, Finnish Ctr Astron, Piikkio, Finland |
| 推荐引用方式 GB/T 7714 | Mingaliev, M.,Sotnikova, Yu.,Mufakharov, T.,et al. Simultaneous spectra and radio properties of BL Lacs[J]. ASTRONOMISCHE NACHRICHTEN,2017,338(6):700-714. |
| APA | Mingaliev, M..,Sotnikova, Yu..,Mufakharov, T..,Nieppola, E..,Tornikoski, M..,...&Erkenov, A..(2017).Simultaneous spectra and radio properties of BL Lacs.ASTRONOMISCHE NACHRICHTEN,338(6),700-714. |
| MLA | Mingaliev, M.,et al."Simultaneous spectra and radio properties of BL Lacs".ASTRONOMISCHE NACHRICHTEN 338.6(2017):700-714. |
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来源：上海天文台
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