Search Publications
Ion Energization and Escape on Mars and Venus
Fedorov, A.; Lundin, R.; Dubinin, E. +4 more
Mars and Venus do not have a global magnetic field and as a result solar wind interacts directly with their ionospheres and upper atmospheres. Neutral atoms ionized by solar UV, charge exchange and electron impact, are extracted and scavenged by solar wind providing a significant loss of planetary volatiles. There are different channels and routes…
The Induced Magnetospheres of Mars, Venus, and Titan
Szego, K.; Fraenz, M.; Edberg, N. +4 more
This article summarizes and aims at comparing the main features of the induced magnetospheres of Mars, Venus and Titan. All three objects form a well-defined induced magnetosphere (IM) and magnetotail as a consequence of the interaction of an external wind of plasma with the ionosphere and the exosphere of these objects. In all three, photoionizat…
Ion Acceleration and Outflow from Mars and Venus: An Overview
Lundin, Rickard
Solar wind forcing of Mars and Venus results in outflow and escape of ionospheric ions. Observations show that the replenishment of ionospheric ions starts in the dayside at low altitudes (≈300-800 km), ions moving at a low velocity (5-10 km/s) in the direction of the external/ magnetosheath flow. At high altitudes, in the inner magnetosheath and …
Exospheres and Energetic Neutral Atoms of Mars, Venus and Titan
Chaufray, Jean-Yves; Futaana, Yoshifumi; Mura, Alessandro +5 more
Our understanding of the upper atmosphere of unmagnetized bodies such as Mars, Venus and Titan has improved significantly in this decade. Recent observations by in situ and remote sensing instruments on board Mars Express, Venus Express and Cassini have revealed characteristics of the neutral upper atmospheres (exospheres) and of energetic neutral…