Can Modified Gravity (MOG) explain the speeding Bullet (Cluster)?

Details Can Modified Gravity (MOG) explain the speeding Bullet (Cluster)? Can Modified Gravity (MOG) explain the speeding Bullet (Cluster)?

2010-05-15

arxiv.org/abs/1005.2685v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages

Scientific paper

We apply our scalar-tensor-vector (STVG) modified gravity theory (MOG) to calculate the infall velocities of the two clusters constituting the Bullet Cluster 1E0657-06. In the absence of an applicable two-body solution to the MOG field equations, we adopt an approximate acceleration formula based on the spherically symmetric, static, vacuum solution of the theory in the presence of a point source. We find that this formula predicts an infall velocity of the two clusters that is consistent with estimates based on hydrodynamic simulations.

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