PKS 0537-441 - an elusive case of a gravitationally lensed blazar

Details PKS 0537-441 - an elusive case of a gravitationally lensed blazar PKS 0537-441 - an elusive case of a gravitationally lensed blazar

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...255l..17f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 255, no. 1-2, p. L17-L19.

Astronomy and Astrophysics

Astrophysics

28

Astronomical Spectroscopy, Bl Lacertae Objects, Blazars, Gravitational Lenses, Astronomical Models, Astronomical Photometry, Elliptical Galaxies

Scientific paper

NTT high resolution imaging (FWHM = 0.55 arcsec) of PKS 0537-441, proposed as a case of gravitationally lensed blazar, shows that the source (z = 0.894) is unresolved, thus failing to detect the alleged presence of a foreground galaxy along the line of sight. As a consequence, the case for a gravitational lensing effect to account for the properties of the source is substantially weakened.

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