Search Publications
Intensities of the Martian N2 electron-impact excited dayglow emissions
Fox, Jane L.; Hać, Nicholas E. F.
The first N2 emissions in the Martian dayglow were detected by the SPICAM UV spectrograph on board the Mars Express spacecraft. Intensities of the (0,5) and (0,6) Vegard-Kaplan bands were found to be about one third of those predicted more than 35 years ago. The Vegard-Kaplan band system arises from the transition from the lowest N…
Probing IMF using nanodust measurements from inside Saturn's magnetosphere
Kempf, S.; Postberg, F.; Srama, R. +6 more
We present a new concept of monitoring the interplanetary magnetic field (IMF) by using in situ measurements of nanodust stream particles in Saturn's magnetosphere. We show that the nanodust detection pattern obtained inside the magnetosphere resembles those observed in interplanetary space and is associated with the solar wind compression regions…
Limb imaging of the Venus O2 visible nightglow with the Venus Monitoring Camera
Hueso, R.; Witasse, O.; Opitz, A. +4 more
investigated the Venus O2 visible nightglow with imagery from the Venus Monitoring Camera on Venus Express. Drawing from data collected between April 2007 and January 2011, we study the global distribution of this emission, discovered in the late 1970s by the Venera 9 and 10 missions. The inferred limb-viewing intensities are on the ord…
The solubility of 40Ar and 84Kr in liquid hydrocarbons: Implications for Titan's geological evolution
Sotin, Christophe; Choukroun, Mathieu; Hodyss, Robert +1 more
solubility of argon and krypton in methane and ethane has been experimentally determined at Titan-relevant temperatures. At typical Titan surface temperature (94 K), argon and krypton solubilities are very large (47% in methane and 15% in ethane for Ar, 29% in methane and 43% in ethane for Kr), making liquid alkanes on Titan an important potential…
Electromagnetic waves observed on a flight over a Venus electrical storm
Russell, C. T.; Zhang, T. L.; Daniels, J. T. M. +3 more
The occurrence of electrical discharges in planetary atmospheres produces high temperatures and pressures enabling chemical reactions that are not possible under local thermodynamic equilibrium conditions. On Earth, electrical discharges in clouds produce nitric oxide. Similar abundances of nitric oxide exist in the Venus atmosphere, but the exist…