J
Jürgen Schmidt
Researcher at University of Oulu
Publications - 80
Citations - 3148
Jürgen Schmidt is an academic researcher from University of Oulu. The author has contributed to research in topics: Enceladus & Population. The author has an hindex of 23, co-authored 78 publications receiving 2780 citations. Previous affiliations of Jürgen Schmidt include Braunschweig University of Technology & University of Colorado Boulder.
Papers
More filters
Journal ArticleDOI
Sodium salts in E-ring ice grains from an ocean below the surface of Enceladus
Frank Postberg,Sascha Kempf,Jürgen Schmidt,Nikolai V. Brilliantov,A. Beinsen,Bernd Abel,Udo Buck,Ralf Srama +7 more
TL;DR: The identification of a population of E-ring grains that are rich in sodium salts, which can arise only if the plumes originate from liquid water, and the abundance of various salt components in these particles exhibit a compelling similarity to the predicted composition of a subsurface Enceladus ocean in contact with its rock core.
Journal ArticleDOI
A salt-water reservoir as the source of a compositionally stratified plume on Enceladus
TL;DR: Whereas previous Cassini observations were compatible with a variety of plume formation mechanisms, these data eliminate or severely constrain non-liquid models and strongly imply that a salt-water reservoir with a large evaporating surface provides nearly all of the matter in the plume.
Journal ArticleDOI
Cassini Dust Measurements at Enceladus and Implications for the Origin of the E Ring
Frank Spahn,Jürgen Schmidt,Nicole Albers,Marcel Hörning,Martin Makuch,Martin Seiß,Sascha Kempf,Ralf Srama,Valeri Dikarev,Valeri Dikarev,Stefan Helfert,Georg Moragas-Klostermeyer,Alexander V. Krivov,M. Sremcevic,Anthony J. Tuzzolino,Thanasis E. Economou,Eberhard Grün,Eberhard Grün +17 more
TL;DR: During Cassini's close flyby of Enceladus on 14 July 2005, the High Rate Detector of the Cosmic Dust Analyzer registered micron-sized dust particles enveloping this satellite; this asymmetric signature is consistent with a locally enhanced dust production in the south polar region of Encesladus.
Journal ArticleDOI
A permanent, asymmetric dust cloud around the Moon
Mihaly Horanyi,Jamey Szalay,Sascha Kempf,Jürgen Schmidt,Eberhard Grün,Ralf Srama,Zoltan Sternovsky +6 more
TL;DR: Observations of a permanent, asymmetric dust cloud around the Moon, caused by impacts of high-speed cometary dust particles on eccentric orbits, as opposed to particles of asteroidal origin following near-circular paths striking the Moon at lower speeds are reported.
Journal ArticleDOI
Slow dust in Enceladus' plume from condensation and wall collisions in tiger stripe fractures.
TL;DR: It is shown that repeated wall collisions of grains, with re-acceleration by the gas, induce an effective friction, offering a natural explanation for the reduced grain velocity, and suggests liquid water below Enceladus’ south pole.