The radio structure of the narrow-line Seyfert 1 Mrk 783 with VLBA and e-MERLIN
dc.contributor | Aalto-yliopisto | fi |
dc.contributor | Aalto University | en |
dc.contributor.author | Congiu, E. | en_US |
dc.contributor.author | Kharb, P. | en_US |
dc.contributor.author | Tarchi, A. | en_US |
dc.contributor.author | Berton, M. | en_US |
dc.contributor.author | Caccianiga, A. | en_US |
dc.contributor.author | Chen, S. | en_US |
dc.contributor.author | Crepaldi, L. | en_US |
dc.contributor.author | Di Mille, F. | en_US |
dc.contributor.author | Järvelä, E. | en_US |
dc.contributor.author | Jarvis, M. E. | en_US |
dc.contributor.author | la Mura, G. | en_US |
dc.contributor.author | Vietri, A. | en_US |
dc.contributor.department | Metsähovi Radio Observatory | en |
dc.contributor.organization | Universidad de Chile | en_US |
dc.contributor.organization | Tata Institute of Fundamental Research | en_US |
dc.contributor.organization | National Institute for Astrophysics (INAF) | en_US |
dc.contributor.organization | Istituto Nazionale di Astrofisica (INAF) | en_US |
dc.contributor.organization | Technion - Israel Institute of Technology | en_US |
dc.contributor.organization | University of Padova | en_US |
dc.contributor.organization | Carnegie Institution of Washington | en_US |
dc.contributor.organization | Max-Planck-Institut für Astrophysik | en_US |
dc.contributor.organization | European Space Astronomy Centre | en_US |
dc.date.accessioned | 2020-12-31T08:38:26Z | |
dc.date.available | 2020-12-31T08:38:26Z | |
dc.date.issued | 2020-12-01 | en_US |
dc.description.abstract | In this paper, we present the analysis of new radio and optical observations of the narrow-line Seyfert 1 galaxy Mrk 783. 1.6 GHz observations performed with the e-MERLIN interferometer confirm the presence of the diffuse emission previously observed. The Very Long Baseline Array (VLBA) also detects the nuclear source both at 1.6 GHz (L band) and 5 GHz (C band). While the L-band image shows only an unresolved core, the C-band image shows the presence of a partially resolved structure at a position angle of 60◦. The brightness temperature of the emission in both bands (>106 K) suggests that it is a pc-scale jet produced by the active galactic nucleus. The relatively steep VLBA spectral index (αVLBA = 0.63 ± 0.03) is consistent with the presence of optically thin emission on milliarcsecond scales. Finally, we investigated two possible scenarios that can result in the misalignment between the kpc and pc-scale radio structure detected in the galaxy. We also analysed the optical morphology of the galaxy, which suggests that Mrk 783 underwent a merging in relatively recent times. | en |
dc.description.version | Peer reviewed | en |
dc.format.extent | 9 | |
dc.format.extent | 3149-3157 | |
dc.format.mimetype | application/pdf | en_US |
dc.identifier.citation | Congiu, E, Kharb, P, Tarchi, A, Berton, M, Caccianiga, A, Chen, S, Crepaldi, L, Di Mille, F, Järvelä, E, Jarvis, M E, la Mura, G & Vietri, A 2020, ' The radio structure of the narrow-line Seyfert 1 Mrk 783 with VLBA and e-MERLIN ', Monthly Notices of the Royal Astronomical Society, vol. 499, no. 3, pp. 3149-3157 . https://doi.org/10.1093/mnras/staa3024 | en |
dc.identifier.doi | 10.1093/mnras/staa3024 | en_US |
dc.identifier.issn | 0035-8711 | |
dc.identifier.issn | 1365-2966 | |
dc.identifier.other | PURE UUID: 26df7193-5a46-429c-ad1f-dcbd4ddef17e | en_US |
dc.identifier.other | PURE ITEMURL: https://research.aalto.fi/en/publications/26df7193-5a46-429c-ad1f-dcbd4ddef17e | en_US |
dc.identifier.other | PURE LINK: http://www.scopus.com/inward/record.url?scp=85097032838&partnerID=8YFLogxK | en_US |
dc.identifier.other | PURE FILEURL: https://research.aalto.fi/files/54018840/staa3024.pdf | en_US |
dc.identifier.uri | https://aaltodoc.aalto.fi/handle/123456789/101430 | |
dc.identifier.urn | URN:NBN:fi:aalto-2020123160251 | |
dc.language.iso | en | en |
dc.publisher | OXFORD UNIV PRESS INC | |
dc.relation.ispartofseries | Monthly Notices of the Royal Astronomical Society | en |
dc.relation.ispartofseries | Volume 499, issue 3 | en |
dc.rights | openAccess | en |
dc.subject.keyword | Galaxies: individual: Mrk 783 | en_US |
dc.subject.keyword | Galaxies: Seyfert | en_US |
dc.subject.keyword | Radio continuum: galaxies | en_US |
dc.title | The radio structure of the narrow-line Seyfert 1 Mrk 783 with VLBA and e-MERLIN | en |
dc.type | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä | fi |
dc.type.version | publishedVersion |