Pseudo-Newtonian potentials and the radiation emitted by a source swirling around a stellar object

Details Pseudo-Newtonian potentials and the radiation emitted by a source swirling around a stellar object Pseudo-Newtonian potentials and the radiation emitted by a source swirling around a stellar object

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phlb..697..506c&link_type=abstract

Physics Letters B, Volume 697, Issue 5, p. 506-511.

Physics

Scientific paper

We use pseudo-Newtonian potentials to compute the scalar radiation emitted by a source orbiting a stellar object. We compare the results obtained in this approach with the ones obtained via quantum field theory in Schwarzschild spacetime. We find that, up to the marginally stable circular orbit, the potential that better reproduces the Schwarzschild results is the Nowak-Wagoner one. For unstable circular orbits, none of the pseudo-Newtonian potentials considered in our analysis produces satisfactory results. We show that the Paczyński-Wiita potential, the most used in the literature to analyze accretion disks, generates the least satisfactory results for the scalar radiation emitted by the source in circular orbit around a Schwarzschild black hole.

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