WATTIEAUX , Gaëtan

Mutual impedance experiments are in situ space plasma diagnostic techniques for the determination of characteristic plasma parameters, such as the plasma density and the electron temperature. These electric experiments rely on the coupling between two emitting and two receiving antennas embedded in the plasma to be diagnosed.Different versions...

The plasma of comet 67P/Churyumov Gerasimenko is analyzed based on the RPC-MIP mutual impedance probe data of the Rosetta mission. Numerical simulations of the RPC-MIP instrumental response considering two populations of electrons were t on experimental responses acquired from January to September 2016 to extract the electron densities and...

After accompanying comet 67P/Churyumov-Gerasimenko on its journey around the Sun and observing the evolution of its induced magnetosphere throughout the comet's life-cycle, the Rosetta operations concluded at the end of September 2016 with a controlled impact on the cometary nucleus. At that time, the comet was located more than 3.7 AU from the...

Context. The electrostatic potential of a spacecraft, V S , is important for the capabilities of in situ plasma measurements. Rosetta has been found to be negatively charged during most of the comet mission and even more so in denser plasmas. Aims. Our goal is to investigate how the negative V S correlates with electron density and temperature...

Context. The electrostatic potential of a spacecraft, V S , is important for the capabilities of in situ plasma measurements. Rosetta has been found to be negatively charged during most of the comet mission and even more so in denser plasmas. Aims. Our goal is to investigate how the negative V S correlates with electron density and temperature...

Context. The electrostatic potential of a spacecraft, VS, is important for the capabilities of in situ plasma measurements. Rosetta has been found to be negatively charged during most of the comet mission and even more so in denser plasmas.Aims. Our goal is to investigate how the negative VS correlates with electron density and temperature and...