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arXiv · 0802.3453

Galactic rotation curves and brane world models

F. Rahaman·M. Kalam·A. DeBenedictis·A. A. Usmani·Saibal Ray
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Abstract

In the present investigation flat rotational curves of the galaxies are considered under the framework of brane-world models where the 4d effective Einstein equation has extra terms which arise from the embedding of the 3-brane in the $5d$ bulk. It has been shown here that these long range bulk gravitational degrees of freedom can act as a mechanism to yield the observed galactic rotation curves without the need for dark matter. The present model has the advantage that the observed rotation curves result solely from well-established non-local effects of gravitation, such as dark radiation and dark pressure under a direct use of the condition of flat rotation curves and does not invoke any exotic matter field.

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F. Rahaman, M. Kalam, A. DeBenedictis, A. A. Usmani, Saibal Ray. 2008-06-14. Galactic rotation curves and brane world models. https://doi.org/10.1111/j.1365-2966.2008.13559.x

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