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ExPRES: a Tool to Simulate Exoplanetary and Planetary Radio Emissions by Louis, C. K.; Hess, S. L. G.; Cecconi, B.; Zarka, P.; Lamy, L.; Aicardi, S.; Loh, A. is a scholarly article available to read on EtoBox.

What is ExPRES: a Tool to Simulate Exoplanetary and Planetary Radio Emissions about?

All magnetized planets are known to produce intense non thermal radio emissions through a mechanism known as Cyclotron Maser Instability (CMI), requiring the presence of accelerated electrons generally arising from magnetospheric current systems. In return, radio emissions are a good probe of these current systems and acceleration processes. The CMI generates highly anisotropic emissions and leads to important visibility effects, which have to be taken into account when interpreting the data. Several studies showed that modeling the radio source anisotropic beaming pattern can reveal a wealth of physical information about the planetary or exoplanetary magnetospheres that produce these emissions. We present a numerical tool, called ExPRES (Exoplanetary and Planetary Radio Emission Simulator), which is able to reproduce the occurrence in time-frequency plane of CMI-generated radio emissions from planetary magnetospheres, exoplanets or star-planet interacting systems. Special attention is given to the computation of the radio emission beaming at and near its source. We explain what physical information about the system can be drawn from such radio observations, and how it is obtained.

Author

Louis, C. K.; Hess, S. L. G.; Cecconi, B.; Zarka, P.; Lamy, L.; Aicardi, S.; Loh, A.

Published

2019

Language

EN