VLBI, MERLIN and VLA observations of the blazar 1156 + 295: a bending relativistic jet

McHardy, I. M., Lehto, H. J., Abraham, R. G., Marscher, A. P., Gear, Walter Kieran ORCID: https://orcid.org/0000-0001-6789-6196 and Muxlow, T. 1990. VLBI, MERLIN and VLA observations of the blazar 1156 + 295: a bending relativistic jet. Monthly Notices of the Royal Astronomical Society 246 (2) , pp. 305-314.

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Abstract

We present VLBI maps at 18, 6, 2.8 and 1.35 cm of the blazar 1156+295 which show a jet emerging from the core along position angle (PA)∼200 and bending to larger PA further out. Maps at 6 cm from 1987 May and 1988 November show different structure, indicating the probable movement from the core of a component with a very high apparent transverse velocity. The 2.8- and 1.35-cm maps are consistent with this hypothesis. We also present MERLIN and VLA total intensity and polarization maps at 18, 6 and 2 cm which show a 2-arcsec jet emerging from the core in PA - 190. We show how a bending relativistic jet can also explain the variability seen in this source.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	Wiley
ISSN:	0035-8711
Related URLs:	http://orca.cf.ac.uk/68281/
Last Modified:	27 Oct 2022 10:00
URI:	https://orca.cardiff.ac.uk/id/eprint/68513

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