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| Titel |
Dust Impact Monitor DIM Onboard Philae: Measurements at Comet 67P/C-G |
| VerfasserIn |
Harald Krüger, Thomas Albin, István Apáthy, Walter Arnold, Alberto Flandes, Hans-Herbert Fischer, Attila Hirn, Alexander Loose, Attila Peter, Klaus J. Seidensticker, Matthias Sperl |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250109167
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| Publikation (Nr.) |
 EGU/EGU2015-9050.pdf |
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| Zusammenfassung |
| The Rosetta lander Philae landed successfully on the nucleus surface of comet
67P/Churyumov-Gerasimenko on 12 November 2014. Philae is equipped with the Dust
Impact Monitor (DIM) which is part of the SESAME experiment package onboard. DIM
employs piezoelectric PZT sensors to detect impacts by sub-millimetre and millimetre-sized
ice and dust particles that are emitted from the nucleus and transported into the cometary
coma.
DIM was operated during Philae’s descent to its nominal landing site at 4 different
altitudes above the comet surface, and at Philae’s final landing site. During descent to the
nominal landing site, DIM measured the impact of one rather big particle that probably had a
size of a few millimeters. No impacts were detected at the final landing site which may be due
to low cometary activity or due to shadowing from obstacles close to Philae, or
both.
We will present the results from our measurements at the comet and compare them with
laboratory calibration experiments with ice/dust particles performed with a DIM flight spare
sensor. |
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