Vector field and rotational curves in dark galactic halos

Details Vector field and rotational curves in dark galactic halos Vector field and rotational curves in dark galactic halos

2004-04-09

arxiv.org/abs/gr-qc/0404042v3

Class.Quant.Grav.22:541-558,2005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, iopart style, misprint removed

Scientific paper

10.1088/0264-9381/22/3/007

We study equations of a non-gauge vector field in a spherically symmetric static metric. The constant vector field with a scale arrangement of components: the time component about the Planck mass m_{Pl} and the radial component about M suppressed with respect to the Planck mass, serves as a source of metric reproducing flat rotation curves in dark halos of spiral galaxies, so that the velocity of rotation v_0 is determined by the hierarchy of scales: \sqrt{2} v_0^2= M/m_{Pl}, and M\sim 10^{12} GeV. A natural estimate of Milgrom's acceleration about the Hubble rate is obtained.

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