Questions tagged [frame-dragging]
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109 questions
1 vote
2 answers
521 views
Would a Newtonian theory of gravity with finite propagation speed already predict gravitomagnetic effects?
In General Relativity, moving/rotating sources lead to gravitomagnetic effects, such as frame dragging. These arise naturally from the off-diagonal components of the metric in the weak-field limit, ...
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1 vote
3 answers
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Do some cosmic rays get their speed increased by the space rotating around spinning black holes and could we use this to count spinning black holes?
In so- called frame dragging the space around spinning black holes rotates. Would this have a noticeable effect on cosmic ray speeds and provide a means to estimate the number of spinning black holes ...
user530909
0 votes
0 answers
105 views
Why does frame dragging obey inverse cube law?
Frame-dragging, also known as the Lense-Thirring effect, is a phenomenon predicted by general relativity where a rotating mass "drags" the surrounding spacetime around with it. This means ...
- 613
1 vote
0 answers
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Frame dragging inside a massive rotating spherical shell
The study of frame dragging by massive rotating spherical shells has been of interest in the context of Mach's principle. The Lense-Thirring effect is a well-known post-Newtonian solution that is ...
- 61
2 votes
1 answer
86 views
Calculating relativistic frame dragging effect on binary pulsar timing
I'm working on modeling frame dragging effects in a binary pulsar system (specifically PSR J0737-3039) for my PhD research and I've hit a wall with the calculations. I need to account for both the ...
- 129
2 votes
1 answer
239 views
When two black holes spinning in opposite directions approach one another is the Kerr metric destroyed as two regions of frame-dragged space meet?
The kerr metric describes the frame-dragged space just outside a spinning uncharged black hole. I have read in popular science articles that frame dragging is like a stick spinning in treacle causing ...
user441992
2 votes
0 answers
178 views
Suited change of basis coordinates for solving relativistic Lense-Thirring and frame dragging
I have not been able to find in textbook (Landau, Wald) the rationales driving to the coordinate basis change proposed in MTW in order to comprehend the Lense Thirring / frame dragging effect in an ...
3 votes
1 answer
122 views
Frame dragging caused by a stream of particles with aligned spins
In theory, does an elementary particle, with intrinsic spin, induce an immeasurably tiny amount of rotational frame-dragging, i.e. can quantum spin cause a Lense-Thirring effect? There is the Einstein-...
- 594
3 votes
3 answers
271 views
How do we account for the 'one way' drag of moving space?
As I understand it, the rotating space outside a Kerr black hole drags radially falling particles into circular motion. Similarly the river model posits that the inward flow of space ensures particles ...
- 10.4k
8 votes
1 answer
2k views
Is this an actual photo of frame dragging?
Is this new image (below) of polarized light surrounding Sagittarius A, showing actual frame dragging being captured by the magnetic field? The image is from this article If not, how would a photo ...
- 5,052
-1 votes
1 answer
125 views
What's the difference between these two frame-dragging equation?
Conceptually, what is the difference between these two frame-dragging equations, describing the rate of angular velocity of the space around a symmetrically spherical mass such as a black hole and why ...
- 295
1 vote
1 answer
74 views
Do frame dragging affects falling object?
Imagine there is a tall tower erected at the equator, a pulse of light is beamed from the top of the tower to the ground. Do I need to consider frame dragging? After all the spacetime is being tucked ...
- 13.3k
2 votes
0 answers
96 views
What will happen to the light due to frame-dragging?
Imagine a rotating black hole is blocking a cluster of stars that I'm observing. Thanks to gravitational lensing I could still see the stars albeit shifted away from their original locations. So now ...
- 13.3k
0 votes
0 answers
79 views
Is there a known formula of the speed distribution of distinct layers in the frame-dragging region of a BH?
I am asking this question only because I want to figure out does space move in this case similarly to a fluid like water or oil are or even more better as speeds o planets around a star.. or this ...
- 487
0 votes
1 answer
124 views
Gravitomagnetic Field vs Distance
If we look at what the Wikipedia says about gravitomagnetic fields $B$ generated by rotating planets / stars we have: https://en.wikipedia.org/wiki/Lense%E2%80%93Thirring_precession#...
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