Temperature oscillations of a gas in circular geodesic motion in the Schwarzschild field
arXiv:1411.6444 · doi:10.1103/PhysRevD.91.024003
Abstract
We investigate a Boltzmann gas at equilibrium with its center of mass moving on a circular geodesics in the Schwarzschild field. As a consequence of Tolman's law we find that a central comoving observer measures oscillations of the temperature and of other thermodynamic quantities with twice the frequencies that are known from test-particle motion. We apply this scheme to the gas dynamics in the gravitational fields of the planets of the Solar System as well as to strong-field configurations of neutron stars and black holes.
11 pages, 4 figures, matches published version