Injected power fluctuations for a non-equilibrium electronic disspative system in space

TL;DR

This study investigates the statistical properties of power fluctuations in a dissipative non-equilibrium system, using both laboratory and space-based experiments, revealing environmental influences on system behavior.

Contribution

It introduces an experimental approach combining terrestrial and space tests to analyze power fluctuation statistics in a dissipative system under varying environmental conditions.

Findings

Increased correlation between forcing and response with higher atmospheric pressure.

Successful implementation of a reduced experiment in a satellite orbit.

Environmental conditions significantly affect power fluctuation properties.

Abstract

In this article we present an experimental study of the statistical properties for the injected power fluctuations of a dissipative system as a function of external environmental conditions. A Brownian motion analog is implemented using a series resistor and capacitor circuit with an Orstein-Ulhenbeck forcing. This system is tested in a controlled thermal bath at the laboratory, setting the bath temperature and different bath atmospheric pressures. The non-equilibrium system shows a higher correlation factor between the external forcing and the system response with increasing bath atmospheric pressure at constant temperature. These results were put to test in an uncontrolled bath such as space, by using a satellite orbiting at 505 km of altitude. A reduced version of the previous experiment was built to fit the satellite capabilities and was successfully integrated in the inner side of the satellite and then run in several locations of its orbit.