  We establish an effective Markov theory for the rotational Brownian motion of
hot nanobeads and nanorods. Compact analytical expressions for the effective
temperature and friction are derived from the fluctuating hydrodynamic
equations of motion. They are verified by comparison with recent measurements
and with GPU powered parallel molecular dynamics simulations over a wide
temperature range. This provides unique insights into the physics of hot
Brownian motion and an excellent starting point for further experimental tests
and applications involving laser-heated nanobeads, nanorods and Janus
particles.
