A Caltech Library Service

1600+434: a new gravitational lens system

Jackson, N. and de Bruyn, A. G. and Myers, S. and Bremer, M. N. and Miley, G. K. and Schilizzi, R. T. and Browne, I. W. A. and Nair, S. and Wilkinson, P. N. and Blandford, R. D. and Pearson, T. J. and Readhead, A. C. S. (1995) 1600+434: a new gravitational lens system. Monthly Notices of the Royal Astronomical Society, 274 (1). L25-L29. ISSN 0035-8711. doi:10.1093/mnras/274.1.L25.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We report the discovery of a new gravitational lens system associated with the flat-spectrum radio source 1600+434. The system has been found in a new large survey of such radio sources. It consists of a 1.4-arcsec double radio source with an associated optical double at the same position and orientation, and with an almost identical flux density ratio to that in the radio. Spectra of the light from two optical images show broad emission lines with a redshift of 1.61. The spectral data are not of sufficient quality to show that both images have identical spectra. Nevertheless, we argue that the probability that 1600+434 is indeed a lensed system is very high.

Item Type:Article
Related URLs:
URLURL TypeDescription
Blandford, R. D.0000-0002-1854-5506
Pearson, T. J.0000-0001-5213-6231
Readhead, A. C. S.0000-0001-9152-961X
Additional Information:© 1995 Royal Astronomical Society. Accepted 1995 March 7. Received 1995 February 27. We acknowledge the communication of unpublished Texas Survey material which was used in the sample selection for the CLASS observations. The William Herschel Telescope is operated on the island of La Palma by the Royal Greenwich Observatory at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. The Very Large Array is operated by the US National Radio Astronomy Observatory on behalf of the US National Science Foundation. The WSRT is operated by the NFRA with the financial support of the Netherlands Organization for Scientific Research (NWO).
Funding AgencyGrant Number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Subject Keywords:galaxies: active - quasars: emission lines - gravitational lensing
Issue or Number:1
Record Number:CaltechAUTHORS:20151104-103611455
Persistent URL:
Official Citation:N. Jackson, A. G. de Bruyn, S. Myers, M. N. Bremer, G. K. Miley, R. T. Schilizzi, I. W. A. Browne, S. Nair, P. N. Wilkinson, R. D. Blandford, T. J. Pearson, and A. C. S. Readhead 1600+434: a new gravitational lens system MNRAS (1995) Vol. 274 L25-L29 doi:10.1093/mnras/274.1.L25 First published online May 1, 1995
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61816
Deposited By: Tony Diaz
Deposited On:04 Nov 2015 19:14
Last Modified:19 Jan 2023 17:06

Repository Staff Only: item control page