Another Gravitational Lens?

Details Another Gravitational Lens? Another Gravitational Lens?

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982msngr..30....2c&link_type=abstract

The Messenger, No.30, P. 2, 1982

Astronomy and Astrophysics

Astronomy

3

Scientific paper

Following the discovery of the Q0957+561 A,B pair and subsequent interpretation as a gravitationally lensed qso, several searches for similar objects have been made, but only two cases have so far been confirmed. In collaboration with astronomers in Edinburgh, one of us (J.-S. Chen) started a qso survey programme two years ago using low-dispersion objective-prism plates taken with the UK Schmidt telescope at Siding Spring Observatory. Three fields have been systematically searched and about 500 qso candidates identified. Among these only one gravitationallens candidate was found. The images (Fig. 1) are ciose together (7"), bright (17.5 mv), stellar, and blue, and the objective-prism spectra contain strong emission lines at very similar redshifts.

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