Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

M. Berton; E. Congiu; E. Järvelä; R. Antonucci; P. Kharb; M. L. Lister; A. Tarchi; A. Caccianiga; S. Chen; L. Foschini; A. Lähteenmäki; J. L. Richards; S. Ciroi; V. Cracco; M. Frezzato; G. La Mura; P. Rafanelli

doi:10.1051/0004-6361/201832612

Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

M. Berton, E. Congiu, E. Järvelä, R. Antonucci, P. Kharb, M. L. Lister, A. Tarchi, A. Caccianiga, S. Chen, L. Foschini, A. Lähteenmäki, J. L. Richards, S. Ciroi, V. Cracco, M. Frezzato, G. La Mura, P. Rafanelli

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Abstract

We report the first results of a survey on 74 narrow-line Seyfert 1 galaxies (NLS1s) carried out in 2015 with the Karl G. Jansky Very Large Array (JVLA) at 5 GHz in A-configuration. So far, this is the largest survey aimed to image the radio continuum of NLS1s. We produced radio maps in order to compare the general properties of three different samples of objects: radio-quiet NLS1s (RQNLS1s), steep-spectrum radio-loud NLS1s (S-NLS1s), and flat-spectrum radio-loud NLS1s (F-NLS1s). We find that the three classes correspond to different radio morphologies, with F-NLS1s being more compact, and RQNLS1s often showing diffuse emission on kpc scales. We also find that F-NLS1s might be low-luminosity and possibly young blazars, and that S-NLS1s are part of the parent population of F-NLS1s. Dedicated studies to RQNLS1s are needed to fully understand their role in the unification pictures.

Original language	English
Article number	A87
Journal	Astronomy and Astrophysics
Volume	614
DOIs	https://doi.org/10.1051/0004-6361/201832612
Publication status	Published - 1 Jun 2018
MoE publication type	A1 Journal article-refereed

Keywords

Galaxies: active
Galaxies: jets
Galaxies: Seyfert
Quasars: supermassive black holes

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10.1051/0004-6361/201832612

ELEC-Berton-et-al-Radio-emitting-AstronomyandAstrophysicsFinal published version, 7.65 MB

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Berton, M., Congiu, E., Järvelä, E., Antonucci, R., Kharb, P., Lister, M. L., Tarchi, A., Caccianiga, A., Chen, S., Foschini, L., Lähteenmäki, A., Richards, J. L., Ciroi, S., Cracco, V., Frezzato, M., La Mura, G., & Rafanelli, P. (2018). Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective. Astronomy and Astrophysics, 614, Article A87. https://doi.org/10.1051/0004-6361/201832612

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title = "Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective",

abstract = "We report the first results of a survey on 74 narrow-line Seyfert 1 galaxies (NLS1s) carried out in 2015 with the Karl G. Jansky Very Large Array (JVLA) at 5 GHz in A-configuration. So far, this is the largest survey aimed to image the radio continuum of NLS1s. We produced radio maps in order to compare the general properties of three different samples of objects: radio-quiet NLS1s (RQNLS1s), steep-spectrum radio-loud NLS1s (S-NLS1s), and flat-spectrum radio-loud NLS1s (F-NLS1s). We find that the three classes correspond to different radio morphologies, with F-NLS1s being more compact, and RQNLS1s often showing diffuse emission on kpc scales. We also find that F-NLS1s might be low-luminosity and possibly young blazars, and that S-NLS1s are part of the parent population of F-NLS1s. Dedicated studies to RQNLS1s are needed to fully understand their role in the unification pictures.",

keywords = "Galaxies: active, Galaxies: jets, Galaxies: Seyfert, Quasars: supermassive black holes",

author = "M. Berton and E. Congiu and E. J{\"a}rvel{\"a} and R. Antonucci and P. Kharb and Lister, {M. L.} and A. Tarchi and A. Caccianiga and S. Chen and L. Foschini and A. L{\"a}hteenm{\"a}ki and Richards, {J. L.} and S. Ciroi and V. Cracco and M. Frezzato and {La Mura}, G. and P. Rafanelli",

year = "2018",

month = jun,

day = "1",

doi = "10.1051/0004-6361/201832612",

language = "English",

volume = "614",

journal = "Astronomy and Astrophysics",

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Berton, M, Congiu, E, Järvelä, E, Antonucci, R, Kharb, P, Lister, ML, Tarchi, A, Caccianiga, A, Chen, S, Foschini, L, Lähteenmäki, A, Richards, JL, Ciroi, S, Cracco, V, Frezzato, M, La Mura, G & Rafanelli, P 2018, 'Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective', Astronomy and Astrophysics, vol. 614, A87. https://doi.org/10.1051/0004-6361/201832612

TY - JOUR

T1 - Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

AU - Berton, M.

AU - Congiu, E.

AU - Järvelä, E.

AU - Antonucci, R.

AU - Kharb, P.

AU - Lister, M. L.

AU - Tarchi, A.

AU - Caccianiga, A.

AU - Chen, S.

AU - Foschini, L.

AU - Lähteenmäki, A.

AU - Richards, J. L.

AU - Ciroi, S.

AU - Cracco, V.

AU - Frezzato, M.

AU - La Mura, G.

AU - Rafanelli, P.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - We report the first results of a survey on 74 narrow-line Seyfert 1 galaxies (NLS1s) carried out in 2015 with the Karl G. Jansky Very Large Array (JVLA) at 5 GHz in A-configuration. So far, this is the largest survey aimed to image the radio continuum of NLS1s. We produced radio maps in order to compare the general properties of three different samples of objects: radio-quiet NLS1s (RQNLS1s), steep-spectrum radio-loud NLS1s (S-NLS1s), and flat-spectrum radio-loud NLS1s (F-NLS1s). We find that the three classes correspond to different radio morphologies, with F-NLS1s being more compact, and RQNLS1s often showing diffuse emission on kpc scales. We also find that F-NLS1s might be low-luminosity and possibly young blazars, and that S-NLS1s are part of the parent population of F-NLS1s. Dedicated studies to RQNLS1s are needed to fully understand their role in the unification pictures.

AB - We report the first results of a survey on 74 narrow-line Seyfert 1 galaxies (NLS1s) carried out in 2015 with the Karl G. Jansky Very Large Array (JVLA) at 5 GHz in A-configuration. So far, this is the largest survey aimed to image the radio continuum of NLS1s. We produced radio maps in order to compare the general properties of three different samples of objects: radio-quiet NLS1s (RQNLS1s), steep-spectrum radio-loud NLS1s (S-NLS1s), and flat-spectrum radio-loud NLS1s (F-NLS1s). We find that the three classes correspond to different radio morphologies, with F-NLS1s being more compact, and RQNLS1s often showing diffuse emission on kpc scales. We also find that F-NLS1s might be low-luminosity and possibly young blazars, and that S-NLS1s are part of the parent population of F-NLS1s. Dedicated studies to RQNLS1s are needed to fully understand their role in the unification pictures.

KW - Galaxies: active

KW - Galaxies: jets

KW - Galaxies: Seyfert

KW - Quasars: supermassive black holes

UR - http://www.scopus.com/inward/record.url?scp=85049208338&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201832612

DO - 10.1051/0004-6361/201832612

M3 - Article

AN - SCOPUS:85049208338

SN - 0004-6361

VL - 614

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A87

ER -

Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

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Keywords

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Metsähovi Radio Observatory

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Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

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Keywords

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Metsähovi Radio Observatory

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