Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-27T07:19:25.451Z Has data issue: false hasContentIssue false
  • English
  • Français

Characteristic signatures of energetic ions upstream from the Kronian magnetosphere as revealed by Cassini/MIMI

Published online by Cambridge University Press:  01 September 2008

Olga E. Malandraki ,
S. M. Krimigis ,
E. T. Sarris ,
N. Sergis ,
K. Dialynas ,
D. G. Mitchell ,
D. C. Hamilton  and
A. Geranios
Olga E. Malandraki
Affiliation:
Institute for Astronomy and Astrophysics, National Observatory of Athens, Pedeli, Athens, Greece email: omaland@astro.noa.gr
S. M. Krimigis
Affiliation:
Office for Space Research and Technology, Academy of Athens, Athens, Greece Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland, USA
E. T. Sarris
Affiliation:
Democritus University of Thrace, Xanthi, Greece
N. Sergis
Affiliation:
Office for Space Research and Technology, Academy of Athens, Athens, Greece
K. Dialynas
Affiliation:
Office for Space Research and Technology, Academy of Athens, Athens, Greece
D. G. Mitchell
Affiliation:
Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland, USA
D. C. Hamilton
Affiliation:
University of Maryland, Department of Physics and Astronomy, MD, USA
A. Geranios
Affiliation:
Nuclear and Particle Physics Department, University of Athens, Greece
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present unique observations obtained by the Magnetospheric Imaging Instrument (MIMI) on the Cassini spacecraft, of the energetic ion population in the environment upstream from the dawn-to-noon sector of the Kronian magnetosphere during the approach phase and subsequent several orbits of the Cassini spacecraft around the planet. High sensitivity observations of energetic ion directional intensities, energy spectra, and ion composition were obtained by the Ion and Neutral Camera (INCA) of the MIMI instrument complement with a geometry factor of ~2.5 cm2sr. Charge state information was provided by the Charge-Energy-Mass-Spectrometer (CHEMS) over the range ~3 to 220 keV per charge. The observations revealed the presence of distinct upstream bursts of energetic hydrogen and oxygen ions up to distances of ~135 RS. The observations are presented and their theoretical implications are addressed.

Keywords

planets and satellites: generalacceleration of particlesplasmas
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S257: Universal Heliophysical Processes , September 2008 , pp. 517 - 522
Copyright
Copyright © International Astronomical Union 2009

References

Anagnostopoulos, G. C., Efthymiadis, D., Sarris, E. T., & Krimigis, S. M. 2005, J. Geophys. Res., 110, A10203Google Scholar
Anderson, K. A. 1981, J. Geophys. Res., 86, 4445CrossRefGoogle Scholar
Christon, S. P., Desai, M., Eastman, T. E., et al. 2000, Geophys. Res. Lett., 27 (16), 2433CrossRefGoogle Scholar
Hamilton, D. C., Gloeckler, G., Krimigis, S. M., & Lanzerotti, L. J. 1981, J. Geophys. Res., 86, 8301CrossRefGoogle Scholar
Keika, K., Nose, M., Christon, S. P., & McEntire, R. W. 2004, J. Geophys. Res., 109, A11104Google Scholar
Krimigis, S. M. 1986, in: CNES & CEPADUES (eds.), Comparative Study of Magnetospheric Systems (France), p. 99Google Scholar
Krimigis, S. M. 1992, Space Sci. Revs, 59, 167CrossRefGoogle Scholar
Krimigis, S. M., Zwickl, R. D., & Baker, D. N. 1985, J. Geophys. Res., 90, 3947CrossRefGoogle Scholar
Krimigis, S. M., Carbary, J. F., Keath, E. P. et al. 1983, J. Geophys. Res., 88, 8871CrossRefGoogle Scholar
Krimigis, S. M., Sibeck, D. G., & McEntire, R. W. 1986, Geophys. Res. Lett., 13, 1376CrossRefGoogle Scholar
Krimigis, S. M., et al. 2004, Space Sci. Rev., 114, 233CrossRefGoogle Scholar
Krimigis, S. M., et al. 2005, Science, 307, 1270CrossRefGoogle Scholar
Krupp, N., Woch, J., Lagg, A., et al. 2002, Geophys. Res. Lett., 29, 1736CrossRefGoogle Scholar
Lee, M. A. 1982, J. Geophys. Res., 87, 5063CrossRefGoogle Scholar
Masters, A., Achilleos, N., Dougherty, M. K., et al. 2008, J. Geophys. Res., 113, A10210Google Scholar
Posner, A., et al. 2002, Geophys. Res. Lett., 29 (7), 1099CrossRefGoogle Scholar
Scholer, M. A. 1985, in: Tsurutani, B. & Stone, R. G. (eds.), Collisionless Shocks in the Heliosphere: A Tutorial Review (Washington, D.C.: AGU), p. 287CrossRefGoogle Scholar
Thomsen, M. F., et al. 2008, J. Geophys. Res., 112, A05220Google Scholar
Trattner, K. J., Fuselier, S. A., Peterson, W. K., Chang, S. W., Friedel, R., & Aellig, M. R. 2003, J. Geophys. Res., 108, 1303Google Scholar
Zwickl, R. D., Krimigis, S. M., Carbary, J. F. et al. 1981, J. Geophys. Res., 86, 8125CrossRefGoogle Scholar