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By the same authors

Very Large Baseline Array observations of Mrk 6: probing the jet-lobe connection

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Very Large Baseline Array observations of Mrk 6 : probing the jet-lobe connection. / Kharb, P.; O'Dea, C.P.; Baum, S.A.; Hardcastle, M.J.; Dicken, D.; Croston, J. H.; Mingo, B.; Noel-Storr, J.

In: Monthly Notices of the Royal Astronomical Society, Vol. 440, No. 4, 01.06.2014, p. 2976-2987.

Research output: Contribution to journalArticlepeer-review

Harvard

Kharb, P, O'Dea, CP, Baum, SA, Hardcastle, MJ, Dicken, D, Croston, JH, Mingo, B & Noel-Storr, J 2014, 'Very Large Baseline Array observations of Mrk 6: probing the jet-lobe connection', Monthly Notices of the Royal Astronomical Society, vol. 440, no. 4, pp. 2976-2987. https://doi.org/10.1093/mnras/stu421

APA

Kharb, P., O'Dea, C. P., Baum, S. A., Hardcastle, M. J., Dicken, D., Croston, J. H., Mingo, B., & Noel-Storr, J. (2014). Very Large Baseline Array observations of Mrk 6: probing the jet-lobe connection. Monthly Notices of the Royal Astronomical Society, 440(4), 2976-2987. https://doi.org/10.1093/mnras/stu421

Vancouver

Author

Kharb, P. ; O'Dea, C.P. ; Baum, S.A. ; Hardcastle, M.J. ; Dicken, D. ; Croston, J. H. ; Mingo, B. ; Noel-Storr, J. / Very Large Baseline Array observations of Mrk 6 : probing the jet-lobe connection. In: Monthly Notices of the Royal Astronomical Society. 2014 ; Vol. 440, No. 4. pp. 2976-2987.

Bibtex

@article{2c9ac90c29004693b284c6eedec66bba,
title = "Very Large Baseline Array observations of Mrk 6: probing the jet-lobe connection",
abstract = "We present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this galaxy for the first time. The core has an inverted spectral index (α1.6 4.9 = +1.0 ± 0.2) and a brightness temperature of 1 × 108 K. Three distinct radio components, which resemble jet elements and/or hotspots, are also detected. The position angles of these elongated jet elements point not only to a curved jet in Mrk 6, but also towards a connection between the AGN and the kpc-scale radio lobes/bubbles in this galaxy. Firmer constraints on the star formation rate provided by new Herschel observations (SFR <0.8 M⊙ yr-1) make the starburst-wind-powered bubble scenario implausible. From plasma speeds, obtained via prior Chandra X-ray observations, and ram pressure balance arguments for the interstellar medium and radio bubbles, the north-south bubbles are expected to take 7.5 × 106 yr to form, and the east-west bubbles 1.4 × 106 yr. We suggest that the jet axis has changed at least once in Mrk 6 within the last ≈107 yr. A comparison of the nuclear radio-loudness of Mrk 6 and a small sample of Seyfert galaxies with a subset of low-luminosity FR I radio galaxies reveals a continuum in radio properties.",
keywords = "Galaxies: active, Galaxies: individual: mrk 6, Galaxies: jets, Galaxies: seyfert, Techniques: high angular resolution, Techniques: interferometric",
author = "P. Kharb and C.P. O'Dea and S.A. Baum and M.J. Hardcastle and D. Dicken and Croston, {J. H.} and B. Mingo and J. Noel-Storr",
year = "2014",
month = jun,
day = "1",
doi = "10.1093/mnras/stu421",
language = "English",
volume = "440",
pages = "2976--2987",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - Very Large Baseline Array observations of Mrk 6

T2 - probing the jet-lobe connection

AU - Kharb, P.

AU - O'Dea, C.P.

AU - Baum, S.A.

AU - Hardcastle, M.J.

AU - Dicken, D.

AU - Croston, J. H.

AU - Mingo, B.

AU - Noel-Storr, J.

PY - 2014/6/1

Y1 - 2014/6/1

N2 - We present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this galaxy for the first time. The core has an inverted spectral index (α1.6 4.9 = +1.0 ± 0.2) and a brightness temperature of 1 × 108 K. Three distinct radio components, which resemble jet elements and/or hotspots, are also detected. The position angles of these elongated jet elements point not only to a curved jet in Mrk 6, but also towards a connection between the AGN and the kpc-scale radio lobes/bubbles in this galaxy. Firmer constraints on the star formation rate provided by new Herschel observations (SFR <0.8 M⊙ yr-1) make the starburst-wind-powered bubble scenario implausible. From plasma speeds, obtained via prior Chandra X-ray observations, and ram pressure balance arguments for the interstellar medium and radio bubbles, the north-south bubbles are expected to take 7.5 × 106 yr to form, and the east-west bubbles 1.4 × 106 yr. We suggest that the jet axis has changed at least once in Mrk 6 within the last ≈107 yr. A comparison of the nuclear radio-loudness of Mrk 6 and a small sample of Seyfert galaxies with a subset of low-luminosity FR I radio galaxies reveals a continuum in radio properties.

AB - We present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this galaxy for the first time. The core has an inverted spectral index (α1.6 4.9 = +1.0 ± 0.2) and a brightness temperature of 1 × 108 K. Three distinct radio components, which resemble jet elements and/or hotspots, are also detected. The position angles of these elongated jet elements point not only to a curved jet in Mrk 6, but also towards a connection between the AGN and the kpc-scale radio lobes/bubbles in this galaxy. Firmer constraints on the star formation rate provided by new Herschel observations (SFR <0.8 M⊙ yr-1) make the starburst-wind-powered bubble scenario implausible. From plasma speeds, obtained via prior Chandra X-ray observations, and ram pressure balance arguments for the interstellar medium and radio bubbles, the north-south bubbles are expected to take 7.5 × 106 yr to form, and the east-west bubbles 1.4 × 106 yr. We suggest that the jet axis has changed at least once in Mrk 6 within the last ≈107 yr. A comparison of the nuclear radio-loudness of Mrk 6 and a small sample of Seyfert galaxies with a subset of low-luminosity FR I radio galaxies reveals a continuum in radio properties.

KW - Galaxies: active

KW - Galaxies: individual: mrk 6

KW - Galaxies: jets

KW - Galaxies: seyfert

KW - Techniques: high angular resolution

KW - Techniques: interferometric

U2 - 10.1093/mnras/stu421

DO - 10.1093/mnras/stu421

M3 - Article

AN - SCOPUS:84899840179

VL - 440

SP - 2976

EP - 2987

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -