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Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
Chen, S.1; Jarvela, E.2; Crepaldi, L.3; Zhou, M.4,5; Ciroi, S.3,6; Berton, M.7,8; Kharb, P.9; Foschini, L.10; Gu, M.4; La Mura, G.11; Vietri, A.3
2020-10-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume498Issue:1Pages:1278-1297
AbstractWe present the results of new radio observations carried out with the Karl G. Jansky Very Large Array C-configuration at 5.5 GHz for a sample of southern narrow-line Seyfert 1 galaxies (NLS1s). This work increases the number of known radio-detected NLS1s in the Southern hemisphere, and confirms that the radio emission of NLS1s is mainly concentrated in a central region at kpc-scale and only a few sources show diffuse emission. In radio-quiet NLS1s, the radio luminosity tends to be higher in steep-spectrum sources and be lower in flat-spectrum sources, which is opposite to radio-loud NLS1s. This may be because the radio emission of steep NLS1s is dominated by misaligned jets, active galactic nucleus driven outflows, or star formation superposing on a compact core. Instead the radio emission of flat NLS1s may be produced by a central core that has not yet developed radio jets and outflows. We discover new NLS1s harbouring kpc-scale radio jets and confirm that a powerful jet does not require a large-mass black hole to be generated. We also find sources dominated by star formation. These NLS1s could be new candidates in investigating the radio emission of different mechanisms.
Keywordgalaxies: active galaxies: jets galaxies: nuclei galaxies: Seyfert radio continuum: galaxies
DOI10.1093/mnras/staa2373
WOS KeywordACTIVE GALACTIC NUCLEI ; X-RAY-PROPERTIES ; CENTRAL ENGINES ; PMN J0948+0022 ; HOST GALAXIES ; JET POWER ; EMISSION ; LOUD ; VARIABILITY ; ACCRETION
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000587741300088
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80760
Collection中国科学院国家天文台
Corresponding AuthorChen, S.
Affiliation1.Technion, Phys Dept, IL-32000 Haifa, Israel
2.European Space Agcy, European Space Astron Ctr, C Bajo El Castillo S-N, E-28692 Madrid, Spain
3.Univ Padua, Dipartimento Fis & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
4.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
5.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
6.INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
7.Univ Turku, Finnish Ctr Astron ESO FINCA, Vesilinnantie 5, FI-20014 Turku, Finland
8.Aalto Univ, Metsahovi Radio Observ, Metsahovintie 114, FI-02540 Kylmala, Finland
9.Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, Post Bag 3, Pune 411007, Maharashtra, India
10.INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, LC, Italy
11.LIP Lab Instrumentat & Expt Particle Phys, Av Prof Gama Pinto 2, P-1649003 Lisbon, Portugal
Recommended Citation
GB/T 7714
Chen, S.,Jarvela, E.,Crepaldi, L.,et al. Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,498(1):1278-1297.
APA Chen, S..,Jarvela, E..,Crepaldi, L..,Zhou, M..,Ciroi, S..,...&Vietri, A..(2020).Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,498(1),1278-1297.
MLA Chen, S.,et al."Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 498.1(2020):1278-1297.
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