Search Publications
Investigation and cartographic representation of Hyperion space images photogrammetric processing results
Nadezhdina, I. E.; Sokolov, A. I.; Nyrtsov, M. V. +1 more
In this paper a new body-fixed coordinate system, based on the results of the processing of saturnian satellite Hyperion surface data, obtained by the Cassini spacecraft and proving the chaotic nature of this satellite rotation, was constructed. In this coordinate system, an approximating triaxial ellipsoid is defined, as well as global orthomosai…
Complementary astrometry of Cassini Imaging Science Subsystem images of Phoebe
Li, Y.; Cooper, N. J.; Lainey, V. +5 more
Phoebe is the only major satellite of Saturn with a retrograde orbit. The Cassini Imaging Science Subsystem (ISS) took a lot of Phoebe images between 2004 and 2017, but only a selection of them has been reduced. In this paper, we reduced the remaining ISS images of Phoebe. In the reduction, the Gaia EDR3 catalogue was used to provide the reference…
On the potential variation of charged dust in Saturn's magnetosphere: The dust-plasma interaction
Rehman, Umer; Hussain, Ibrar; Qammar, Ambreen
We presented a theory describing interaction between cold plasma and dust grain based on Cassini observations of Enceladus in Saturn's E ring. We assumed a finite-sized dust cloud with inside plasma to simulate the environment. The dust cloud that results from this scenario has a different potential than the surrounding plasma. Cassini's observati…
An empirical model of energetic electrons in Saturn's magnetosphere based on Cassini data
Zhang, Lei; Wang, Jian-zhao; Huo, Zhuo-xi
Based on one-hour average data observed by the MIMI/LEMMS instrument onboard the Cassini spacecraft from 2004 to 2017, we present an empirical model of energetic electrons (27 keV-1937 keV) in Saturn's magnetosphere. This model distinguishes between two different regions. In the inner magnetosphere (<20RS, RS = 60268 km is…
End-of-mission calibration of the Cassini Imaging Science Subsystem
Porco, Carolyn; West, Robert; Verbiscer, Anne +3 more
We provide an end-of-mission update to the in-flight calibration of the Imaging Science Subsystem cameras on the Cassini spacecraft, resolving discrepancies in our previous analyses from 2004 to 2010, incorporating data through the end of the mission, adding a correction for the weak but measurable camera sensitivity decline over time, and providi…
Seasonal variation of north-south asymmetry in the intensity of Saturn Kilometric Radiation from 2004 to 2017
Morioka, Akira; Tsuchiya, Fuminori; Misawa, Hiroaki +9 more
This study investigates the long-term variation of Saturn Kilometric Radiation (SKR) intensity observed by the Radio and Plasma Wave Science (RPWS) instrument on board the Cassini spacecraft from 2004 (southern summer) to 2017 (northern summer). The results show that the SKR intensity was brighter in the summer hemisphere than in the winter hemisp…
Final Mimas and Enceladus atlases derived from Cassini-ISS images
Matz, K. -D.; Kersten, E.; Porco, C. C. +4 more
The Imaging Science Subsystem (ISS) on-board Cassini took a few high-resolution images of the icy Saturnian satellites Mimas and Enceladus over the last seven years of the Cassini mission during non-targeted flybys. We used the new Mimas images to improve the existing semi-controlled mosaic of Mimas. A new controlled Enceladus mosaic was published…
Magnetic signatures of ion cyclotron waves during Cassini's high-inclination orbits of Saturn
Simon, Sven; Meeks, Zachary
Based on magnetic field data from Cassini's high-inclination orbits of Saturn (radius RS = 60 , 268 km), we analyze the latitudinal distribution of ion cyclotron waves in the giant planet's magnetosphere. Our survey takes into account magnetic field data from all high-inclination orbits between 2004 and 2015. We analyze the dependency o…
Access of energetic particles to Titan's exobase: A study of Cassini's T9 flyby
Coates, A. J.; Krupp, N.; Dougherty, M. K. +6 more
We study how the local electromagnetic disturbances introduced by Titan affect the ionization rates of the atmosphere. For this, we model the precipitation of energetic particles, specifically hydrogen and oxygen ions with energies between 1 keV and 1 MeV, into Titan's exobase for the specific magnetospheric configuration of the T9 flyby. For the …
A comprehensive analysis of ion cyclotron waves in the equatorial magnetosphere of Saturn
Simon, Sven; Kabanovic, Slawa; Meeks, Zachary
We present a comprehensive analysis of ion cyclotron waves in the equatorial magnetosphere of Saturn, considering all magnetic field data collected during the Cassini era (totaling to over 4 years of data from the equatorial plane). This dataset includes eight targeted flybys of Enceladus, three targeted flybys of Dione, and three targeted flybys …