Can Einstein's equations fully explain gravitational anomalies in galaxies?

In summary, gravitational anomalies are deviations in the expected gravitational force in a certain area caused by variations in mass distribution or space-time curvature. They can be detected through methods like measuring acceleration or observing light bending. These anomalies can affect object movement and are caused by factors such as large masses, changes in density, and the influence of other celestial bodies. While not usually dangerous, they can impact structures and navigation systems in extreme cases.
  • #1
TrickyDicky
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Are the anomalous galactic rotation curves and observed gravitational lensing(i.e.bullet cluster) not well explained only when using Newtonian theory or has this problem also been tried out with Einstein field equations? ( I guess it is hard to deal with GR non-linear equations since it implies many bodies)
 
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  • #2
Good question. Differentially rotating discs of dust can be described in GR, see Ansorg and Meinel, "Differentially rotating disks of dust" (1999) arXiv:gr-qc/9910045v2. This has been recently extended to include a BH at the centre. But I haven't found any attempt to calculate the rotation curves.
 

FAQ: Can Einstein's equations fully explain gravitational anomalies in galaxies?

What are gravitational anomalies?

Gravitational anomalies are deviations from the expected gravitational force in a particular area. This can occur due to variations in the mass distribution of objects or the curvature of space-time.

How are gravitational anomalies detected?

Gravitational anomalies can be detected through various methods such as measuring the acceleration of objects, observing the bending of light, and using specialized instruments like gravimeters.

Can gravitational anomalies affect the movement of objects?

Yes, gravitational anomalies can affect the movement of objects by altering their trajectories or causing them to experience unequal gravitational forces.

What causes gravitational anomalies?

Gravitational anomalies can be caused by a variety of factors such as the presence of large masses, changes in the density of the Earth's crust, and the influence of other celestial bodies.

Are gravitational anomalies dangerous?

In most cases, gravitational anomalies are not dangerous and do not pose a threat to human life. However, in extreme cases, they can impact the stability of structures and cause disruptions in navigation systems.

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