Volume 116, Number 6, December 2016
|Number of page(s)||7|
|Published online||08 February 2017|
The nonextensive parameter for the rotating astrophysical systems with power-law distributions
Department of Physics, School of Science, Tianjin University - Tianjin 300072, China
Received: 23 June 2016
Accepted: 19 January 2017
We study the nonextensive parameter for the rotating astrophysical systems with power-law distributions, including both the rotating self-gravitating system and the rotating space plasma. We extend the equation of the nonextensive parameter to a complex system with arbitrary force field , and derive a general equation of the q-parameter, most generally including both the rotating self-gravitating systems and the rotating space plasmas. At the same time, we reproduce the κ-distribution in space plasmas and obtain equations of the κ-parameter. We show that the q-parameter is related not only to the temperature gradient, the gravitational force and the electromagnetic force, but also to the inertial centrifugal force and Coriolis force. Thus, the rotation introduces a significant effect on the nonextensivity in the systems. Several examples are given to illustrate the nonextensive effect introduced by the rotation.
PACS: 05.20.-y – Classical statistical mechanics / 95.30.Tg – Thermodynamic processes, conduction, convection, equations of state / 94.05.-a – Space plasma physics
© EPLA, 2016
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