Gravitationally lensed images in Abell 370

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167831· OSTI ID:5220290

Grossman, S A; Narayan, R ^[1]

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1. Steward Observatory, Tucson, AZ (USA)

Several blue arclike images have been found in the galaxy cluster A370, some up to 1 arcmin from the cluster center. It is shown here that gravitational lensing can account for the positions and lengths of the observed arcs without having to resort to any extreme or peculiar cluster mass distribution, provided there is a significant amount of dark matter in the cluster. The constraints that can be placed on the core radius and ellipticity of the cluster and on the redshifts of the background galaxies are discussed. 32 refs.

• OSTI ID: 5220290
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 344; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
640106 -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONSTRAINTS
COORDINATES
DENSITY
GALAXY CLUSTERS
GRAVITATIONAL LENSES
IMAGES
LENSES
MATHEMATICAL MODELS
MORPHOLOGY
NONLUMINOUS MATTER
PHYSICAL PROPERTIES
RED SHIFT