The new gravitational lens system B1030+074

(2) Max-Planck-Institute for Radioastronomy; (3) Kapteyn Astronomical Institute; A. R. Patnaik (2); Bonn; D. R. Marlow (1); E. Xanthopoulos (1); Groningen); I. W. A. Browne (1); L. J. King (1); L. V. E. Koopmans (3)

arxiv: astro-ph/9802014 · v1 · submitted 1998-02-02 · 🌌 astro-ph

The new gravitational lens system B1030+074

E. Xanthopoulos (1) , I. W. A. Browne (1) , L. J. King (1) , L. V. E. Koopmans (3) , N. J. Jackson (1) , D. R. Marlow (1) , A. R. Patnaik (2) , R. W. Porcas (2)

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P. N. Wilkinson (1) ((1) NRAL Jodrell Bank University of Manchester (2) Max-Planck-Institute for Radioastronomy Bonn (3) Kapteyn Astronomical Institute Groningen)

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keywords galaxyimagessystemb1030gravitationalimagelenslensed

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We report the discovery of a new double image gravitational lens system B1030+074 which was found during the Jodrell Bank - VLA Astrometric Survey (JVAS). We have collected extensive radio data on the system using the VLA, MERLIN, the EVN and the VLBA and optical observations using WFPC2 on the HST. The lensed images are separated by 1.56 arcseconds and their flux density ratio at centimetric wavelengths is approximately 14:1 although the ratio is slightly frequency dependent and the images appear to be time variable. The HST pictures show both the lensed images and the lensing galaxy close to the weaker image. The lensing galaxy has substructure which could be a spiral arm or an interacting galaxy.

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The new gravitational lens system B1030+074

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