I
Irmgard Jernej
Researcher at Austrian Academy of Sciences
Publications - 31
Citations - 1991
Irmgard Jernej is an academic researcher from Austrian Academy of Sciences. The author has contributed to research in topics: Titan (rocket family) & Atmosphere of Titan. The author has an hindex of 12, co-authored 29 publications receiving 1626 citations. Previous affiliations of Irmgard Jernej include Institut für Weltraumforschung (Space Research Institute).
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Journal ArticleDOI
The Magnetospheric Multiscale Magnetometers
Christopher T. Russell,Brian J. Anderson,Wolfgang Baumjohann,Kenneth R. Bromund,D. Dearborn,David Fischer,Guan Le,Hannes K. Leinweber,D. Leneman,Werner Magnes,J. D. Means,Mark B. Moldwin,Rumi Nakamura,D. R. Pierce,Ferdinand Plaschke,Kathryn Rowe,James A. Slavin,Robert J. Strangeway,Roy B. Torbert,Christian Hagen,Irmgard Jernej,Aris Valavanoglou,Ingo Richter +22 more
TL;DR: To achieve mission objectives, the calibration determined on the ground will be refined in space to ensure all eight magnetometers are precisely inter-calibrated, and the information flow that provides the data on the rapid time scale needed for mission success is described.
Journal ArticleDOI
In situ measurements of the physical characteristics of Titan's environment
Marcello Fulchignoni,Francesca Ferri,Francesco Angrilli,Andrew J. Ball,Akiva Bar-Nun,M. A. Barucci,C. Bettanini,G. Bianchini,William J. Borucki,Giacomo Colombatti,M. Coradini,Athena Coustenis,Stefano Debei,Peter Falkner,Giulio Fanti,Enrico Flamini,V. Gaborit,R. Grard,Michel Hamelin,Ari-Matti Harri,B. Hathi,Irmgard Jernej,Mark Leese,A. Lehto,P. F. Lion Stoppato,J. J. López-Moreno,T. Mäkinen,J. A. M. McDonnell,Christopher P. McKay,Gregorio J. Molina-Cuberos,Fritz M. Neubauer,Valerio Pirronello,Rafael Rodrigo,Bortolino Saggin,Konrad Schwingenschuh,Alvin Seiff,Fernando Simões,Håkan Svedhem,Tetsuya Tokano,Martin C. Towner,R. Trautner,Paul Withers,Paul Withers,John C. Zarnecki +43 more
TL;DR: The temperature and density profiles, as determined by the Huygens Atmospheric Structure Instrument (HASI), from an altitude of 1,400 km down to the surface were higher than expected and the extent of atmospheric electricity was also hitherto unknown.
Journal ArticleDOI
Electric properties and related physical characteristics of the atmosphere and surface of Titan
R. Grard,Michel Hamelin,J. J. López-Moreno,Konrad Schwingenschuh,Irmgard Jernej,Gregorio J. Molina-Cuberos,Gregorio J. Molina-Cuberos,Fernando Simões,R. Trautner,Peter Falkner,Francesca Ferri,Marcello Fulchignoni,Rafael Rodrigo,Håkan Svedhem,C. Beghin,Jean-Jacques Berthelier,V. Brown,M. Chabassiere,J. M. Jeronimo,L. M. Lara,Tetsuya Tokano +20 more
TL;DR: The permittivity, waves and altimetry (PWA) instrument was designed for the investigation of the electric properties and other related physical characteristics of the atmosphere of Titan, from an altitude around 140 km down to the surface.
Journal ArticleDOI
Electron conductivity and density profiles derived from the mutual impedance probe measurements performed during the descent of Huygens through the atmosphere of Titan
Michel Hamelin,C. Beghin,R. Grard,J. J. López-Moreno,Konrad Schwingenschuh,Fernando Simões,R. Trautner,Jean-Jacques Berthelier,V. Brown,Michel Chabassière,Peter Falkner,Francesca Ferri,Marcello Fulchignoni,Irmgard Jernej,J. M. Jeronimo,Gregorio J. Molina-Cuberos,Gregorio J. Molina-Cuberos,Rafael Rodrigo,Tetsuya Tokano +18 more
TL;DR: In this article, a detailed analysis of both data sets is required, in order to correct for environmental effects and compare the two independent estimates of the electrical conductivity, and the existence of a prominent ionized layer, and enhancements in the conductivity and electron density profiles at 63 km, are discussed in the light of previous theoretical predictions.
Journal ArticleDOI
Structure of Titan's low altitude ionized layer from the Relaxation Probe onboard HUYGENS
J. J. López-Moreno,Gregorio J. Molina-Cuberos,Gregorio J. Molina-Cuberos,Michel Hamelin,R. Grard,Fernando Simões,R. Godard,Konrad Schwingenschuh,C. Beghin,Jean-Jacques Berthelier,V. Brown,Peter Falkner,Francesca Ferri,M. Fulchignoni,Irmgard Jernej,J. M. Jeronimo,Rafael Rodrigo,R. Trautner +17 more
TL;DR: In this paper, the authors presented the altitude distribution of the concentration of positive ions and electrons obtained from the RP and MI sensors, which were made from 140 to 40 km and show a maximum of charge densities ≈2 × 109 m−3 positive ions, and ≈450 × 106 m− 3 electrons at around 65 km.