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| Titel |
Monitoring Comet 67P/C-G Micrometer Dust Flux: GIADA onboard Rosetta. |
| VerfasserIn |
Vincenzo Della Corte, Alessandra Rotundi, Stavro Ivanovski, Mario Accolla, Marco Ferrari, Roberto Sordini, Francesca Lucarelli, Vladimir Zakharov, Marco Fulle, Elena Mazzotta Epifani, José J. López-Moreno, Julio Rodríguez, Luigi Colangeli, Pasquale Palumbo, Ezio Bussoletti, Jean-Francois Crifo, Francesca Esposito, Simon F. Green, Eberhard Grün, Philippe L. Lamy |
| 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 |
250106880
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| Publikation (Nr.) |
 EGU/EGU2015-6559.pdf |
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| Zusammenfassung |
| (21)ESA-ESAC, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Cañada, Madrid, Spagna
The MicroBalance System (MBS) is one of the three measurement subsystems of GIADA, the Grain Impact Analyzer and Dust Accumulator on board the Rosetta/ESA spacecraft (S/C). It consists of five Quartz Crystal Microbalances (QCMs) in roughly orthogonal directions providing the cumulative dust flux of grains smaller than 10 microns.
The MBS is continuously monitoring comet 67P/CG since the beginning of May 2014. During the first 4 months of measurements, before the insertion of the S/C in the bound orbit phase, there were no evidences of dust accumulation on the QCMs. Starting from the beginning of October, three out of five QCMs measured an increase of the deposited dust. The measured fluxes show, as expected, a strong anisotropy. In particular, the dust flux appears to be much higher from the Sun direction with respect to the comet direction.
Acknowledgment: GIADA was built by a consortum led by the Univ. Napoli “Parthenope” & INAF- Oss. Astr. Capodimonte, in collaboration with the Inst. de Astrofisica de Andalucia, Selex-ES, FI and SENER. GIADA is presently managed & operated by Ist. di Astrofisica e Planetologia Spaziali-INAF, IT. GIADA was funded and managed by the Agenzia Spaziale Italiana, IT, with the support of the Spanish Ministry of Education and Science MEC, ES. GIADA was developed from a PI proposal from the University of Kent; sci. & tech. contribution were provided by CISAS, IT, Lab. d'Astr. Spat., FR, and Institutions from UK, IT, FR, DE and USA. We thank the RSGS/ESAC, RMOC/ESOC & Rosetta Project/ESTEC for their out-standing work. Science support provided was by NASA through the US Rosetta Project managed by the Jet Propulsion Laboratory/ California Institute of Technology. GIADA calibrated data will be available through ESA’s PSA web site (www.rssd.esa.int/index.php? project=PSA&page=in dex). We would like to thank Angioletta Coradini for her contribution as a GIADA Co-I. |
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