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Red Shifts

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Posted by Chris James on September 19, 1997 19:33:10 UTC


if a black hole exists inside a quasar, then the gravitational effects must cause red shift on photons. Why is it that the red shift of quasars are attributed to dopplar effects? I have never read any book (not technical journals because I won't understand) which accounts for gravitational red shifts. How can they be so sure that such large red shifts present in quasars are due to receding velocity?

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