Gravitational luminosity of a hot plasma in R2 gravity

Nadiri Niri, B. (0000 0004 0526 1998grid.468058.7, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha, Iran) ; Jahan, A. (0000 0004 0526 1998grid.468058.7, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha, Iran) ; Corda, C. (0000 0004 0526 1998grid.468058.7, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha, Iran)

18 December 2016

Abstract: The R2 -gravity contribution to the energy loss of a hot plasma due to gravitational bremsstrahlung is calculated in the linearized theory on the basis of classical Coulomb scattering of plasma constituents in small-angle scattering approximation. The explicit dependence of the gravitational luminosity on the plasma temperature is derived and its relevance to the Einstein gravity is demonstrated. The result, when applied to the Sun as a hot plasma, shows very good agreement with available data.


Published in: EPJC 76 (2016) 692
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-016-4545-3
License: CC-BY-3.0



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