1830-211 - Gravitational Lensed Images of a Flat-Spectrum Radio Core

Details 1830-211 - Gravitational Lensed Images of a Flat-Spectrum Radio Core 1830-211 - Gravitational Lensed Images of a Flat-Spectrum Radio Core

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.246..263s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 246, NO.2/SEP15, P. 263, 1990

Astronomy and Astrophysics

Astronomy

56

Scientific paper

High-resolution radio observations are presented of the flat-spectrum, 1-arcsec double radio source 1830- 211. Optical CCD imaging in the I-band shows an ~22 - mag object coincident with the radio source position. We find that the unique nature of 1830 - 211 may be understood in terms of gravitational imaging of a background compact flat-spectrum radio source by a foreground galaxy. A lensing model is presented for the compact as well as the extended emission features, and possible tests to confirm the lens hypothesis are outlined.

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