CLASS B0445+123: A new two-image gravitational lens system

M. K. Argo; N. J. Jackson; I. W.A. Browne; T. York; J. P. McKean; A. D. Biggs; R. D. Blandford; A. G. De Bruyn; K. H. Chae; C. D. Fassnacht; L. V.E. Koopmans; S. T. Myers; M. Norbury; T. J. Pearson; P. M. Phillips; A. C.S. Readhead; D. Rusin; P. N. Wilkinson

doi:10.1046/j.1365-8711.2003.06138.x

CLASS B0445+123: A new two-image gravitational lens system

M. K. Argo, N. J. Jackson, I. W.A. Browne, T. York, J. P. McKean, A. D. Biggs, R. D. Blandford, A. G. De Bruyn, K. H. Chae, C. D. Fassnacht, L. V.E. Koopmans, S. T. Myers, M. Norbury, T. J. Pearson, P. M. Phillips, A. C.S. Readhead, D. Rusin, P. N. Wilkinson

Department of Physics and Astronomy

Research output: Contribution to journal › Review article › peer-review

11 Scopus citations

Abstract

A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey. Radio observations with the Very Large Array (VLA), the MultiElement Radio Linked Interferometer Network and the Very Long Baseline Array at increasingly higher resolutions all show two components with a flux density ratio of ∼7 : 1 and a separation of 1.34 arcsec. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8.4 GHz show evidence of a feature to the south-east of the brighter component and a corresponding extension of the weaker component to the north-west. Optical observations with the William Herschel Telescope show ∼1.7-arcsec extended emission aligned in approximately the same direction as the separation between the radio components with an R-band magnitude of 21.8 ± 0.4.

Original language	English
Pages (from-to)	957-961
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	338
Issue number	4
DOIs	https://doi.org/10.1046/j.1365-8711.2003.06138.x
State	Published - 1 Feb 2003

Keywords

Galaxies: Individual: B0445+123
Gravitational lensing

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10.1046/j.1365-8711.2003.06138.x

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Argo, M. K., Jackson, N. J., Browne, I. W. A., York, T., McKean, J. P., Biggs, A. D., Blandford, R. D., De Bruyn, A. G., Chae, K. H., Fassnacht, C. D., Koopmans, L. V. E., Myers, S. T., Norbury, M., Pearson, T. J., Phillips, P. M., Readhead, A. C. S., Rusin, D., & Wilkinson, P. N. (2003). CLASS B0445+123: A new two-image gravitational lens system. Monthly Notices of the Royal Astronomical Society, 338(4), 957-961. https://doi.org/10.1046/j.1365-8711.2003.06138.x

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abstract = "A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey. Radio observations with the Very Large Array (VLA), the MultiElement Radio Linked Interferometer Network and the Very Long Baseline Array at increasingly higher resolutions all show two components with a flux density ratio of ∼7 : 1 and a separation of 1.34 arcsec. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8.4 GHz show evidence of a feature to the south-east of the brighter component and a corresponding extension of the weaker component to the north-west. Optical observations with the William Herschel Telescope show ∼1.7-arcsec extended emission aligned in approximately the same direction as the separation between the radio components with an R-band magnitude of 21.8 ± 0.4.",

keywords = "Galaxies: Individual: B0445+123, Gravitational lensing",

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doi = "10.1046/j.1365-8711.2003.06138.x",

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Argo, MK, Jackson, NJ, Browne, IWA, York, T, McKean, JP, Biggs, AD, Blandford, RD, De Bruyn, AG, Chae, KH, Fassnacht, CD, Koopmans, LVE, Myers, ST, Norbury, M, Pearson, TJ, Phillips, PM, Readhead, ACS, Rusin, D & Wilkinson, PN 2003, 'CLASS B0445+123: A new two-image gravitational lens system', Monthly Notices of the Royal Astronomical Society, vol. 338, no. 4, pp. 957-961. https://doi.org/10.1046/j.1365-8711.2003.06138.x

TY - JOUR

T1 - CLASS B0445+123

T2 - A new two-image gravitational lens system

AU - Argo, M. K.

AU - Jackson, N. J.

AU - Browne, I. W.A.

AU - York, T.

AU - McKean, J. P.

AU - Biggs, A. D.

AU - Blandford, R. D.

AU - De Bruyn, A. G.

AU - Chae, K. H.

AU - Fassnacht, C. D.

AU - Koopmans, L. V.E.

AU - Myers, S. T.

AU - Norbury, M.

AU - Pearson, T. J.

AU - Phillips, P. M.

AU - Readhead, A. C.S.

AU - Rusin, D.

AU - Wilkinson, P. N.

PY - 2003/2/1

Y1 - 2003/2/1

N2 - A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey. Radio observations with the Very Large Array (VLA), the MultiElement Radio Linked Interferometer Network and the Very Long Baseline Array at increasingly higher resolutions all show two components with a flux density ratio of ∼7 : 1 and a separation of 1.34 arcsec. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8.4 GHz show evidence of a feature to the south-east of the brighter component and a corresponding extension of the weaker component to the north-west. Optical observations with the William Herschel Telescope show ∼1.7-arcsec extended emission aligned in approximately the same direction as the separation between the radio components with an R-band magnitude of 21.8 ± 0.4.

AB - A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey. Radio observations with the Very Large Array (VLA), the MultiElement Radio Linked Interferometer Network and the Very Long Baseline Array at increasingly higher resolutions all show two components with a flux density ratio of ∼7 : 1 and a separation of 1.34 arcsec. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8.4 GHz show evidence of a feature to the south-east of the brighter component and a corresponding extension of the weaker component to the north-west. Optical observations with the William Herschel Telescope show ∼1.7-arcsec extended emission aligned in approximately the same direction as the separation between the radio components with an R-band magnitude of 21.8 ± 0.4.

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

CLASS B0445+123: A new two-image gravitational lens system

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