Quote:
Originally Posted by rtomes
OK, I went there and it referenced a page about 200,000 quasars can't be wrong. Unfortunately the article makes the claim that quasars will be brightened by gravitational lensing but doesn't really explain the method. According to my logic, if you make some part of the distant sky brighter by expanding it, you must make some other correspondingly part dimmer by contracting it. It is a simple fact that the totally area of the sky must be conserved by the lensing. So why would quasars be brighter on average? |
(my bold)
Do you have some equations (maths, numbers, and stuff) to support this?
Specifically, what mechanism (or class of mechanisms) are you assuming is doing the brightening, expanding (and dimming, contracting)?