A Search for Excess Galaxies around Distant Flat Spectrum Radio Quasars

Details A Search for Excess Galaxies around Distant Flat Spectrum Radio Quasars A Search for Excess Galaxies around Distant Flat Spectrum Radio Quasars

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...254...39f&link_type=abstract

Astronomy and Astrophysics, Vol.254, NO. FEB(I), P. 39, 1992

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

We present deep direct imaging data of 14 radio-loud flat- spectrum quasars with redshifts between z = 1.7 and 3.4. Fugmann (1988) found a strong increase in foreground galaxy density towards a similar sample of quasars. He interpreted this as being due to gravitational lensing, which raises the background objects into flux limited samples. Our data do not show an excess of galaxies in the vicinities of the quasars. However, we do find two candidates for gravitationally lensed quasars.

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