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Title:
Influence of IMF draping direction and crustal magnetic field location on Martian ion beams
Authors:
Carlsson, E.; Brain, D.; Luhmann, J.; Barabash, S.; Grigoriev, A.; Nilsson, H.; Lundin, R.
Affiliation:
AA(Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden; Department of Physics, Luleå University of Technology, SE-971 87 Luleå, Sweden), AB(Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA 94720-7450, USA), AC(Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA 94720-7450, USA), AD(Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden), AE(Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden), AF(Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden), AG(Swedish Institute of Space Physics, Box 812, SE-981 28 Kiruna, Sweden)
Publication:
Planetary and Space Science, Volume 56, Issue 6, p. 861-867. (P&SS Homepage)
Publication Date:
05/2008
Origin:
ELSEVIER
DOI:
10.1016/j.pss.2007.12.016
Bibliographic Code:
2008P&SS...56..861C

Abstract

Data from the Ion Mass Analyzer (IMA) sensor of the ASPERA-3 instrument suite onboard Mars Express and data from the Magnetometer/Electron Reflectometer (MAG/ER) on Mars Global Surveyor have been analyzed to determine whether ion beam events (IBEs) are correlated with the direction of the draped interplanetary magnetic field (IMF) or the proximity of strong crustal magnetic fields to the subsolar point. We examined 150 IBEs and found that they are organized by IMF draping direction. However, no clear dependence on the subsolar longitude of the strongest magnetic anomaly is evident, making it uncertain whether crustal magnetic fields have an effect on the formation of the beams. We also examined data from the IMA sensor of the ASPERA-4 instrument suite on Venus Express and found that IBEs are observed at Venus as well, which indicates the morphology of the Martian and Venusian magnetotails are similar.
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