Moving charge in gravitational field.

1. Jun 23, 2012

Sagar_C

An accelerated charge particle radiates. So, in the light of principle of equivalence, does a charge particle also radiate when it is in a gravitational field? Sorry if the question doesn't make any sense.

2. Jun 23, 2012

Muphrid

I would say no, because "acceleration" really means "proper acceleration". A box with a rocket on the bottom is the same as a box on the Earth because they both exhibit non-zero proper acceleration. If the box and the person inside are both being acted on by a graviational field and in free-fall, you can't tell that you're accelerating.

If the particle is following a geodesic, I don't believe it will radiate.

3. Jun 23, 2012

jfy4

4. Jun 24, 2012

Sagar_C

I thought so but somehow couldn't find. :(...Would you have some time to lead to those?

Edited to add: I found one: https://www.physicsforums.com/showthread.php?t=65767 . Any other would be appreciated.

Last edited: Jun 24, 2012
5. Jun 24, 2012