E
E. G. Shelley
Researcher at Advanced Technology Center
Publications - 11
Citations - 1097
E. G. Shelley is an academic researcher from Advanced Technology Center. The author has contributed to research in topics: Comet & Halley's Comet. The author has an hindex of 10, co-authored 11 publications receiving 1052 citations.
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Journal ArticleDOI
Ion composition and dynamics at comet Halley
Hans Balsiger,Kathrin Altwegg,F. Bühler,J. Geiss,A. G. Ghielmetti,Bruce E. Goldstein,Raymond Goldstein,Wesley T. Huntress,Wing-Huen Ip,Alan J. Lazarus,A. Meier,Marcia Neugebauer,U. Rettenmund,H. Rosenbauer,Rainer Schwenn,R. D. Sharp,E. G. Shelley,E. Ungstrup,D. T. Young +18 more
TL;DR: The Giotto space probe's ion mass spectrometer has obtained data on the composition and velocity distributions of cometary ions at distances of between 7.5 million and 1300 km from the comet Halley nucleus as mentioned in this paper.
Journal ArticleDOI
Rosina - Rosetta orbiter spectrometer for ion and neutral analysis
Hans Balsiger,Kathrin Altwegg,Peter Bochsler,Peter Eberhardt,J. Fischer,Stephan Graf,Annette Jäckel,Eernest Kopp,U. Langer,M. Mildner,Jenny Müller,Timm-Emanuel Riesen,Martin Rubin,S. Scherer,Peter Wurz,Sandra Wüthrich,E. Arijs,S. Delanoye,J. De Keyser,Eddy Neefs,D. Nevejans,H. Rème,C. Aoustin,Christian Mazelle,J. L. Medale,Jean-André Sauvaud,Jean-Jacques Berthelier,Jean-Loup Bertaux,L. Duvet,J. M. Illiano,Stephen A. Fuselier,A. G. Ghielmetti,T Magoncelli,E. G. Shelley,A. Korth,K Heerlein,H. Lauche,Stefano Livi,A. Loose,Ulrich Mall,B. Wilken,Fritz Gliem,B. Fiethe,Tamas I. Gombosi,Bruce P. Block,G. R. Carignan,Lennard A. Fisk,J. H. Waite,D. T. Young,Hermann Wollnik +49 more
TL;DR: The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) as discussed by the authors was used for ion and neutral analysis of the volatile part of a comet in situ.
Book ChapterDOI
Evidence for methane and ammonia in the coma of comet P/Halley.
Mark Allen,Mona L. Delitsky,Wesley T. Huntress,Yuk L. Yung,Wing-Huen Ip,Rainer Schwenn,H. Rosenbauer,E. G. Shelley,Hans Balsiger,J. Geiss +9 more
TL;DR: Methane and ammonia abundances in the coma of Halley are derived from Giotto IMS data using an Eulerian model of chemical and physical processes inside the contact surface to simulate Giotto HIS ion mass spectral data for mass-to-charge ratios (m/q) from 15 to 19.
Journal Article
The pickup of cometary protons by the solar wind
Marcia Neugebauer,Alan J. Lazarus,Kathrin Altwegg,Hans Balsiger,Bruce E. Goldstein,Raymond Goldstein,Fritz M. Neubauer,H. Rosenbauer,Rainer Schwenn,E. G. Shelley,E. Unstrup +10 more
TL;DR: The HERS detector of the Giotto spacecraft measured the 3D distribution of picked-up cometary protons over a distance of about 8 million km upstream of the bow shock of comet P/Hally.
Journal Article
The ion population between 1300 km and 230 000 km in the coma of comet P/Halley
Kathrin Altwegg,Hans Balsiger,J. Geiss,Raymond Goldstein,W.-H. Ip,A. Meier,Marcia Neugebauer,H. Rosenbauer,E. G. Shelley +8 more
TL;DR: In this paper, the authors presented the ion density-, composition-, velocity-, and temperature profiles for the water group ion (mass range 16-19 amu/e) along Giotto's inbound trajectory from 230,000 to 1300 km from the comet nucleus.