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In-Situ Exploration of Dust in the Solar System and Initial Results from the Galileo Dust Detector

Published online by Cambridge University Press:  12 April 2016

E. Grün ,
H. Fechtig ,
M. S. Hanner ,
J. Kissel ,
B.-A. Lindblad ,
D. Linkert ,
G. Morfill  and
H. A. Zook
E. Grün
Affiliation:
Max-Plank-Institut für Kernphysik, 6900 Heidelberg, Germany
H. Fechtig
Affiliation:
Max-Plank-Institut für Kernphysik, 6900 Heidelberg, Germany
M. S. Hanner
Affiliation:
Jet Propulsion Laboratory, Pasadena, CA 91103, U.S.A.
J. Kissel
Affiliation:
Max-Plank-Institut für Kernphysik, 6900 Heidelberg, Germany
B.-A. Lindblad
Affiliation:
Lund Observatory, 221 Lund, Sweden
D. Linkert
Affiliation:
Max-Plank-Institut für Kernphysik, 6900 Heidelberg, Germany
G. Morfill
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, 8046 Garching, Germany
H. A. Zook
Affiliation:
NASA Johnson Space Center, Houston, TX 77058, U.S.A.

Abstract

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In-situ measurements of interplanetary dust have been performed in the heliocentric distance range from 0.3 AU out to 18 AU. Due to their small sensitive areas (typically 0.01 m2 for the highly sensitive impact ionization sensors) or low mass sensitivities (≥10−9g of the large area penetration detectors) previous instruments recorded only a few 100 impacts during their lifetimes. Nevertheless, important information on the distribution of dust in interplanetary space has been obtained between 0.3 and 18 AU distance from the Sun. The Galileo dust detector combines the high mass sensitivity of impact ionization detectors (10−15 g) together with a large sensitive area (0.1 m2). The Galileo spacecraft was launched on October 18, 1989 and is on its solar system cruise towards Jupiter. Initial measurements of the dust flux from 0.7 to 1.2 AU are presented.

Type
Interplanetary Dust: Space and Earth Environment Studies
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 21 - 28
Copyright
Copyright © Kluwer 1991

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