I Two or more gravitational lenses perfectly aligned with Earth?

zuz
Messages
96
Reaction score
36
TL;DR Summary
2 or more gravitational lenses
Has anyone ever discovered 2 or more gravitational lenses perfectly aligned with earth? So one lens magnifies the galaxies behind it and another lens between the first and earth magnifies it even more? Would you even be able to tell if they were?
 
Physics news on Phys.org
zuz said:
TL;DR Summary: 2 or more gravitational lenses

Has anyone ever discovered 2 or more gravitational lenses perfectly aligned with earth? So one lens magnifies the galaxies behind it and another lens between the first and earth magnifies it even more? Would you even be able to tell if they were?
Take a look at the theory paper Viktor T. Toth, Non-coplanar gravitational lenses and the “communication bridge”, which states in §6:
"...in particular, a two-lens system (the so called gravitational lens “bridge”) delivers no advantages, no additional signal amplification over the amplification offered by a single lens near the source."
 
  • Like
  • Informative
Likes PeroK, PAllen and berkeman
renormalize said:
Take a look at the theory paper Viktor T. Toth, Non-coplanar gravitational lenses and the “communication bridge”, which states in §6:
"...in particular, a two-lens system (the so called gravitational lens “bridge”) delivers no advantages, no additional signal amplification over the amplification offered by a single lens near the source."
Thank you.
 
Thread 'Can this experiment break Lorentz symmetry?'
1. The Big Idea: According to Einstein’s relativity, all motion is relative. You can’t tell if you’re moving at a constant velocity without looking outside. But what if there is a universal “rest frame” (like the old idea of the “ether”)? This experiment tries to find out by looking for tiny, directional differences in how objects move inside a sealed box. 2. How It Works: The Two-Stage Process Imagine a perfectly isolated spacecraft (our lab) moving through space at some unknown speed V...
Does the speed of light change in a gravitational field depending on whether the direction of travel is parallel to the field, or perpendicular to the field? And is it the same in both directions at each orientation? This question could be answered experimentally to some degree of accuracy. Experiment design: Place two identical clocks A and B on the circumference of a wheel at opposite ends of the diameter of length L. The wheel is positioned upright, i.e., perpendicular to the ground...
According to the General Theory of Relativity, time does not pass on a black hole, which means that processes they don't work either. As the object becomes heavier, the speed of matter falling on it for an observer on Earth will first increase, and then slow down, due to the effect of time dilation. And then it will stop altogether. As a result, we will not get a black hole, since the critical mass will not be reached. Although the object will continue to attract matter, it will not be a...
Back
Top