All Questions
Tagged with frame-dragging general-relativity
68
questions
2
votes
2
answers
109
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 ...
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 ...
-1
votes
1
answer
67
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 ...
1
vote
1
answer
27
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 ...
0
votes
0
answers
32
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 ...
0
votes
1
answer
85
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#...
2
votes
0
answers
53
views
Can linear frame dragging cause gravitational dipole radiation?
I have just learned that linear frame dragging exists in General Relativity. I have also seen simulations where a periodically accelerated and decelerated mass causes a sort of gravitational dipole ...
1
vote
1
answer
48
views
Space mission for experimental verification of frame-dragging in the strong-gravity limit
Frame-dragging is an important general relativistic effect that has been observed in the weak-field limit by the Gravity Probe B experiment for the gravitational field of the Earth.
Although the ...
3
votes
0
answers
50
views
Thirring-Lens 1918 Paper seems to be wrong in the numeric results. Am I misreading it?
The 1918 paper that is often considered a basis for frame dragging (a copy is at http://www.neo-classical-physics.info/uploads/3/4/3/6/34363841/lense_thirring_-_lense-thirring_effect.pdf) seems to say ...
0
votes
0
answers
73
views
Frame dragging in vicinity of rotating black hole
I am trying to understand subject effect in the framework of general relativity. Wikipedia says as follows:
imagine that a north–south-oriented ice skater, in orbit over the equator of a rotating
...
2
votes
1
answer
69
views
Particle motion due to frame dragging near a pulsar?
PSR J1748−2446ad is the fastest known pulsar rotating at 716 times per second. This neutron star is estimated to have a mass of less than two solar masses and a radius of less than 16km. The linear ...
1
vote
1
answer
39
views
Do stationary objects (constant distance and angle to central body) experience frame dragging?
Imagine there is a test mass in the vicinity of spinning black hole, but the test mass is kept in place, i.e. it is not in free fall or orbit. Does it experience frame dragging?
My guess would be 'no',...
0
votes
1
answer
40
views
When black holes rotating in opposite directions meet does frame dragging stop where they meet?
Does spacetime stop being dragged when counterclockwise rotation meets clockwise rotation for black holes of equal mass?
2
votes
1
answer
103
views
Will two passing bricks in empty space induce rotation in one another?
Two identical rectangular bricks with mass $m$ pass each other anti-parallel in empty space with a constant velocity $v$. Say the smallest distance between them is $s$. Assume the bricks to be aligned ...
1
vote
0
answers
75
views
Do irreducible off-diagonal components in the stress-energy-momentum tensor cause framedragging effects?
Let's take a look at the stress-energy-momentum tensor:
We can distinguish various components.
The 00 component represents the mass-energy density as seen in a local frame moving along with the ...