Departure of the thermal escape rate from the jeans escape rate for atomic hydrogen at Earth, Mars, and Pluto

• Published in: Planetary and space science Vol. 198; no. April; p. 105178
• Main Author: Chaufray, J.-Y.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2021; Elsevier
• Subjects: Astrophysics; Atmospheric escape; Earth and Planetary Astrophysics; Monte Carlo simulations; Sciences of the Universe; Atmospheric escape; Monte Carlo simulations

The recent observations of the Pluto’s upper atmosphere by the UV spectrometer Alice on the New Horizons spacecraft mission have shown that it is not in slow hydrodynamic escape as predicted by some fluid models but not by kinetic models. This instrument also detects the Lyman-alpha emission of atom...