A small mass, large image separation gravitational lens model

Details A small mass, large image separation gravitational lens model A small mass, large image separation gravitational lens model

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.145...53n&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 145, no. 1, June 1988, p. 53-59.

Astronomy and Astrophysics

Astrophysics

2

Gravitational Lenses, Image Analysis, Astronomical Models, Brightness Distribution, Separation, Very Long Base Interferometry

Scientific paper

It is shown that gravitational lensing could produce images of comparable brightness which are separated by an angular distance larger than the angular size of the Einstein ring of the lens distribution. Hence, specific lens configurations allow given image separations to be derived with significantly less mass than a standard single lens model. A specific example is supplied, a simple case of two properly positioned lenses acting instead of one. Observational consequences are discussed that would result if such a model were used to explain the candidate gravitational lens systems Hazard 1146+111 B, C and PKS 1145-071. Such a lens distribution might, in many cases, be verifiable with VLBI techniques.

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