Quote:
Originally Posted by bojan
Hmmm
Could you be more specific?
Could you provide me (us) with more accurate information?
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The absence of gravitational aberration has nothing to do with the speed of gravity greatly exceeding the speed the light but rather the motion of the body in the field.
A common "pictorial" misinterpretation is to think of a planetary orbit like throwing a slingshot. The rope is represented as a
single line of force which rotates around a centre. If gravity is represented this way then yes aberration is an issue.
The reality is we need to refer to a gravitational field instead of an individual line of force. A gravitational field can be represented as field lines radiating from a centre. An object in orbit around this centre moves from one field line to the next instead of being "confined" to a single (rotating) line of force. The movement of the object in the field cancels out the aberration effects due to gravity.
While this is a crude description (I can't make it any simpler) the full description is given here.
http://arxiv.org/PS_cache/gr-qc/pdf/9909/9909087v2.pdf
Steven