Published in

Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society: Letters, 1(490), p. L26-L31, 2019

DOI: 10.1093/mnrasl/slz136

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The discovery of secondary lobes in the Seyfert galaxy NGC 2639

Journal article published in 2019 by Biny Sebastian ORCID, P. Kharb ORCID, C. P. O’Dea ORCID, J. F. Gallimore, S. A. Baum
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

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Data provided by SHERPA/RoMEO

Abstract

ABSTRACT We report the discovery of a secondary pair of radio lobes in the Seyfert galaxy NGC 2639 with polarization-sensitive observations with the Karl G. Jansky Very Large Array (VLA). The presence of these lobes, which are aligned nearly perpendicular to the known set of radio lobes observed in the east–west direction, has not been reported previously in the literature. The in-band rotation measure image shows gradients in both the lobes indicative of organized magnetic field structures on kpc-scales. The magnetic field structure is aligned with the jet/lobe direction in both the lobes. Based on the settled optical morphology of the host galaxy, it is likely that a minor merger that did not disrupt the host galaxy structure is responsible for the observed features in NGC 2639. This also explains the near 90° change in the jet direction; the current jet direction being the result of a new accretion disc formed by the minor merger, whose direction was a result of the angular momentum of the inflowing merger gas.

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