Radiation of a neutral polarizable particle moving uniformly through a thermal radiation field

Abstract

We discuss the properties of thermal electromagnetic radiation produced by a neutral polarizable nanoparticle moving with an arbitrary relativistic velocity in a heated vacuum background with a fixed temperature. We show that the particle in its own rest frame acquires the radiation temperature of vacuum, multiplied by a velocity-dependent factor, and then emits thermal photons predominantly in the forward direction. The intensity of radiation proves to be much higher than for the particle at rest. For metal particles with high energy, the ratio of emitted and absorbed radiation power is proportional to the Lorentz-factor squared.

17 pages, 7 figures; revised version submitted to Phys. Scripta

References in corpus (2)

• Dissipative Van der Waals interaction between a small particle and a metal surface
• Features of the fluctuation -electromagnetic interaction between a small conducting particle and polarizable medium

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