Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: jeffreyH on 30/04/2015 01:52:06

Title: How would frame dragging affect gravitational acceleration?
Post by: jeffreyH on 30/04/2015 01:52:06

I am currently thinking about frame dragging and what effects it would have on a body falling towards a dense object under the influence of gravity. I have looked at the Kerr metric but haven't yet worked out what all the functions actually represent.

Title: Re: How would frame dragging affect gravitational acceleration?
Post by: evan_au on 30/04/2015 12:54:05

For an overview, look at our old friend Wikipedia (http://wiki frame dragging).

Apparently, frame dragging imparting angular momentum to an orbiting body is a larger effect than frame dragging on a body falling straight towards a dense object. I guess partly because frame dragging has more time to act on an orbiting body than a falling body?

Title: Re: How would frame dragging affect gravitational acceleration?
Post by: jeffreyH on 30/04/2015 18:13:36

Quote from: evan_au on 30/04/2015 12:54:05

For an overview, look at our old friend Wikipedia (http://wiki frame dragging).

Apparently, frame dragging imparting angular momentum to an orbiting body is a larger effect than frame dragging on a body falling straight towards a dense object. I guess partly because frame dragging has more time to act on an orbiting body than a falling body?

At the moment I am looking at the Schwarzschild metric and a straight line path to towards the centre of gravity. I want to start by excluding frame dragging and avoid parabolic functions. The profile of this path can then be a baseline. This will show up extremes where an orbital won't.