The lens effect of a big spherical inhomogeneity in the linear approximation

Journal Article · Sun Apr 01 00:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168545· OSTI ID:7040915

Moreno, J; Portilla, M ^[1]

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1. Valencia Universidad, Burjasot (Spain)

The paper addresses a large gravitational lens, of dimensions comparable with observer-lens-source distances, for arbitrary lens-observer-source angles. The lens is approximated by a small, pressureless, spsherically symmetric perturbation in a Einstein-de Sitter universe. The deflection angle contains essential terms which do not appear when the lens is approximated by an isolated body in a Minkowskian space. These terms should be considered to study the optical appearance of the inhomogeneity. The lens equation explicitly conserves brightness over the whole celestial sphere of the observer. 8 refs.

• OSTI ID: 7040915
• Journal Information: Astrophysical Journal; (USA), Vol. 352; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GRAVITATIONAL LENSES
ANGULAR MOMENTUM
ASTROPHYSICS
BRIGHTNESS
LUMINOSITY
MINKOWSKI SPACE
SIZE
LENSES
MATHEMATICAL SPACE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPACE
640106* - Astrophysics & Cosmology- Cosmology