1112.3520 (Lorenzo Iorio)

Constraining the electric charges of some astronomical bodies in
Reissner-Nordstrom spacetimes and generic r^-2-type power-law potentials from
orbital motions    [PDF]

Lorenzo Iorio

We put model-independent, dynamical constraints on the net electric charge Q of some astronomical and astrophysical objects by assuming that their exterior spacetimes are described by the Reissner-Nordstroem metric, which induces an additional potential U_RN \propto Q^2 r^-2. Our results extend to other hypothetical power-law interactions inducing extra-potentials U_pert = r^-2 as well (abridged).

View original: http://arxiv.org/abs/1112.3520