Physics
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12233c&link_type=abstract
HST Proposal ID #12233. Cycle 18
Physics
Scientific paper
The title is correct: we propose to confirm low redshift quasars acting as strong gravitational lenses on background emission line galaxies. Our sample is selected from 22,298 SDSS spectra of quasars with z < 0.7. Using cross-correlation techniques, we identify 10-15 quasars that have at least two emission lines in their background, among [OII], H beta and the [OIII] doublet. Four of our quasars have all four lines clearly visible in their background. We propose to confirm the lensing nature of these objects with WFC3/UVIS images in the F555W and F814W filters, and to constrain lens models of the quasar host galaxies. Our sample is similar to the SLACS sample of strong lenses, but with quasar host galaxies as lenses. As these galaxies are massive, we expect that most of the background objects will be strongly lensed {as in SLACS}, displaying well visible arcs and multiple images within 1-2 arcsec. We propose to obtain sharp images of our targets along with clean PSF. With image deconvolution techniques, we shall remove the quasar and its host galaxy and we shall measure the size and shape of the background Einstein Ring allowing, for the first time, to weigh directly quasar host galaxies and to measure their total radial mass profile with strong gravitational lensing.;
No associations
LandOfFree
Strong Gravitational Lensing by Quasars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Strong Gravitational Lensing by Quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strong Gravitational Lensing by Quasars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1786004