Strong Gravitational Lensing

Strong gravitational lensing is a gravitational lensing effect that is strong enough to produce multiple images, arcs, or even Einstein rings. Generally, the strong lensing effect requires the projected lens mass density greater than the critical density . For point-like background sources, there will be multiple images; for extended background emissions, there can be arcs or rings. Topologically, the multiple image production is governed by the odd number theorem.

Read more about Strong Gravitational LensingGalaxy Lensing, Cluster Lensing

Other articles related to "gravitational":

Schiehallion Experiment - Mathematical Procedure
... The two gravitational forces on the plumb-bob are given by Newton's law of gravitation Where G is Newton's gravitational constant ... the horizontal and vertical components of the string tension T can be related to the gravitational forces and the deflection angle θ Substituting for T Since VE, VM, d ...
TAMA 300
... TAMA 300 is a gravitational wave detector located at the Mitaka campus of the National Astronomical Observatory of Japan ... It is a project of the gravitational wave studies group at the Institute for Cosmic Ray Research (ICRR) of the University of Tokyo ... for cosmic ray studies, and is currently developing the Large Scale Cryogenic Gravitational Wave Telescope (LCGT) ...
Bernard F. Schutz
... theory of general relativity, more concretely on the physics of gravitational waves ... of the directors and head of the astrophysics group at the Max Planck Institute for Gravitational Physics in Potsdam, Germany ... the largest concerted effort to directly detect gravitational waves) ...
Schiehallion Experiment - Background
... hangs straight downwards in a symmetrical gravitational field ... mass such as a mountain is nearby, its gravitational attraction should pull the pendulum's plumb-bob slightly out of true ... Gravitational effects, he wrote, were only discernible on the planetary scale ...
Canonical Units - Overview
... The Time Unit is defined by the gravitational parameter is the gravitational constant is the mass of the central reference body For canonical units, the gravitational parameter is defined ...

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