Observations of a new sample of gravitational lens candidates

Details Observations of a new sample of gravitational lens candidates Observations of a new sample of gravitational lens candidates

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6629j&link_type=abstract

HST Proposal ID #6629

Computer Science

Hst Proposal Id #6629 Cosmology

Scientific paper

gravitational lens candidates from the Cosmic Lens All-Sky Survey {CLASS} made with the VLA. The first phase of CLASS yielded two new gravitational lenses and two virtually certain candidates. All four are being followed up in Cycle 5. We now propose to investigate three more objects, two more from the first phase and one more from the recently completed second phase of CLASS. Statistically we would expect 14 lensed objects from the 7000 targets already surveyed, based on our earlier survey which shows that 1 in 500 sources are lensed. All three new targets have multiple compact {<=30mas} flat radio spectrum components and have separations which make them difficult to study from the ground. Therefore they are uniquely suited to the capabilities of the HST. Our primary aims are to confirm the lens status by finding optical counterpatrs to the images and to identify

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