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

Walter Gear

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

Physics

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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)$\sim$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.

Original language	English (Ireland)
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	246
Issue number	2
Publication status	Published - 1 Sep 1990

Authors (Note for portal: view the doc link for the full list of authors)

Authors
I. M. McHardy and H. J. Lehto and R. G. Abraham and A. P. Marscher and Walter Kieran Gear and T. Muxlow

Cite this

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

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)\$\textbackslash{}sim\$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.",

author = "Walter Gear",

year = "1990",

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language = "English (Ireland)",

volume = "246",

journal = "Monthly Notices of the Royal Astronomical Society",

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T1 - VLBI, MERLIN and VLA observations of the blazar 1156 + 295: a bending relativistic jet

AU - Gear, Walter

PY - 1990/9/1

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N2 - 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)$\sim$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.

AB - 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)$\sim$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.

M3 - Article

VL - 246

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -