Itoero Posted August 24, 2017 Posted August 24, 2017 Astronomers using Caltech's Owens Valley Radio Observatory (OVRO) have found evidence for a bizarre lensing system in space, in which a large assemblage of stars is magnifying a much more distant galaxy containing a jet-spewing supermassive black hole.https://phys.org/news/2017-08-cosmic-magnifying-lens-reveals-jets.html#jCp
beecee Posted August 24, 2017 Posted August 24, 2017 (edited) I already have made reference to that finding at another thread entitled. "More Confirmation of GR" http://www.scienceforums.net/topic/108872-more-confirmation-of-gr/#comment-1009127 Gravitational lensing of course is an effect predicted by GR. It is simply the effect of gravity (warped spacetime) on light from a more distant object by intervening object/s, including DM. The distant object appears distorted and in many cases multiple images of it are observed. The Einstein Cross effect is a great example. The straightest path taken by light through warped/curved spacetime is called geodsics. Einstein predicted a number of effects that would follow from GR, the first being his successful prediction of the precession of the perihelion of Mercury's orbital parameter, and the apparent deflection of light as it passes near the gravitational field of another body. This was confirmed by Eddington during a total solar eclipse in 1919, when the light from a distant star was seen to be shifted from its position when viewed at night without the Sun's intervening effects. In this relevant case it is the effects of the gravity and warping spacetime from a SMBH on the orbital parameters of a close orbiting star. Edited August 24, 2017 by beecee
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