Environ 2 tours par jour 67P/Churyumov-Gerasimenko

Fractures at higher lat- itudes (the model calculation took one case with a latitude of.. Normalised total diurnal sublimation energy, integrated over one diurnal period, displayed as

We find that when the electron motion is not significantly interrupted by collisions with neutrals, large average gradients within tens of km of the comet, as well as often

A clue to the missing physics could be how the distance relative to the electron exobase is observed to orga- nize observations both of the diamagnetic cavity (Henri et al. 2017) and

(2017) used such a model where all electrons created inside the exobase were assumed to be cold, so that no cooling occurred outside this boundary, and the plasma outside was a mix

The properties expected for small collisional rubble piles should be compared to those of comet 67P; (1) a low bulk density ρ bulk = 535 ± 35 kg m −3 and high porosity of ∼70%;

We model the distribution by a sum of approximate Maxwellians, described by simple pole expansions. The thermal spread of the bulk of the water ion population is given by the..

This boundary crossing was observed, outbound, as an increase in energy and flux of the cometary ions and electrons, the spacecraft potential increased to positive values, the

 Un boîtier électronique pour le gestion de l’instrument, la collecte et le traitement du signal des antennes dans la gamme 7 kHz-3.5 MHz;. RPC-MIP (Sonde à