Abstract
We investigate the behavior of the thermal energy of a photon gas under the influence of gravity and observed from a moving frame, by considering Boltzmann's equation in a Riemannian manifold. For radiation measurements this approach has a local character, and it points out how the detected energy is affected by the motion of an observer in the presence of gravity.
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Stedile, E. Measurement of cosmic background energy by a moving detector in a Riemannian space-time. Int J Theor Phys 36, 2913–2922 (1997). https://doi.org/10.1007/BF02435717
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DOI: https://doi.org/10.1007/BF02435717