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Characterization of dust aggregates in the vicinity of the Rosetta spacecraft

Guettler, C. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Hasselmann, P. H. (author)
UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France
Li, Y. (author)
Macau Univ Sci & Technol, Space Sci Inst, Ave Wai Long, Taipa, Macau, Peoples R China
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Fulle, M. (author)
Osserv Astron Trieste, INAF, Via Tiepolo 11, I-34143 Trieste, Italy
Tubiana, C. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Kovacs, G. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Agarwal, J. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Sierks, H. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Fornasier, S. (author)
UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France
Hofmann, M. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Marques, P. Gutierrez (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Ott, T. (author)
Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26129 Oldenburg, Germany
Drolshagen, E. (author)
Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26129 Oldenburg, Germany
Bertini, I. (author)
Univ Padua, Ctr Studies & Act Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy
Barbieri, C. (author)
Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy
Lamy, P. L. (author)
CNRS, UMR 7326, Lab Astrophys Marseille, F-13388 Marseille 13, France;Aix Marseille Univ, F-13388 Marseille 13, France
Rodrigo, R. (author)
INTA, CSIC, Ctr Astrobiol, E-28850 Madrid, Spain;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland
Koschny, D. (author)
ESA, European Space Res & Technol Ctr, Sci Support Off, Keplerlaan 1,Postbus 299, NL-2201 AZ Noordwijk, Netherlands
Rickman, Hans (author)
Uppsala universitet,Teoretisk astrofysik,PAS Space Res Ctr, Bartycka 18A, PL-00716 Warsaw, Poland
A'Hearn, M. F. (author)
Univ Maryland, Dept Astron, College Pk, MD 20742 USA
Barucci, M. A. (author)
UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,Sorbonne Univ, LESIA,Observ Paris,PSL Res Univ,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France
Bodewits, D. (author)
Univ Maryland, Dept Astron, College Pk, MD 20742 USA
Bertaux, J. -L (author)
Boudreault, S. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Cremonese, G. (author)
Osserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy
Da Deppo, V. (author)
CNR, IFN, UOS Padova, LUXOR, Via Trasea 7, I-35131 Padua, Italy
Davidsson, B. (author)
Jet Prop Lab, M-S 183-301,4800 Oak Grove Dr, Pasadena, CA 91109 USA
Debei, S. (author)
Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy
De Cecco, M. (author)
Univ Trento, Fac Engn, Via Mesiano 77, I-38123 Trento, Italy
Deller, J. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Geiger, B. (author)
ESA, European Space Astron Ctr, Operat Dept, POB 78, E-28691 Villanueva De La Canada, Madrid, Spain
Groussin, O. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
Gutierrez, P. J. (author)
CSIC, Inst Astrofis Andalucia, C Glorieta Astron S-N, E-18008 Granada, Spain
Hviid, S. F. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany
Ip, W. -H (author)
Jorda, L. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
Keller, H. U. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany;Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys, Mendelssohnstr 3, D-38106 Braunschweig, Germany
Knollenberg, J. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany
Kramm, J. R. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Kuehrt, E. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany
Kuppers, M. (author)
ESA, European Space Astron Ctr, Operat Dept, POB 78, E-28691 Villanueva De La Canada, Madrid, Spain
Lara, L. M. (author)
CSIC, Inst Astrofis Andalucia, C Glorieta Astron S-N, E-18008 Granada, Spain
Lazzarin, M. (author)
Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy
Lopez-Moreno, J. J. (author)
CSIC, Inst Astrofis Andalucia, C Glorieta Astron S-N, E-18008 Granada, Spain
Marzari, F. (author)
Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy
Mottola, S. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany
Naletto, G. (author)
Univ Padua, Ctr Studies & Act Space CISAS G Colombo, Via Venezia 15, I-35131 Padua, Italy;CNR, IFN, UOS Padova, LUXOR, Via Trasea 7, I-35131 Padua, Italy;Univ Padua, Dept Informat Engn, Via Gradenigo 6-B, I-35131 Padua, Italy
Oklay, N. (author)
Deutsch Zentrum Luft & Raumfahrt DLR, Inst Planetenforsch, Rutherfordstr 23, D-12489 Berlin, Germany
Pajola, M. (author)
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
Shi, X. (author)
Max Planck Inst Solar Syst Res, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
Thomas, N. (author)
Univ Bern, Inst Phys, Sidlerstr 5, CH-3012 Bern, Switzerland;Univ Bern, Ctr Space & Habitabil, CH-3012 Bern, Switzerland
Vincent, J. -B (author)
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 (creator_code:org_t)
2017-08-02
2017
English.
In: Monthly notices of the Royal Astronomical Society. - : OXFORD UNIV PRESS. - 0035-8711 .- 1365-2966. ; 469, s. S312-S320
Related links:
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • In a Rosetta/OSIRIS imaging activity in 2015 June, we have observed the dynamic motion of particles close to the spacecraft. Due to the focal setting of the OSIRIS wide angle camera, these particles were blurred, which can be used to measure their distances to the spacecraft. We detected 109 dust aggregates over a 130 min long sequence, and find that their sizes are around a millimetre and their distances cluster between 2 and 40 m from the spacecraft. Their number densities are about a factor 10 higher than expected for the overall coma and highly fluctuating. Their velocities are small compared to the spacecraft orbital motion and directed away from the spacecraft, towards the comet. From this we conclude that they have interacted with the spacecraft and assess three possible scenarios. In the likeliest of the three scenarios, centimetre-sized aggregates collide with the spacecraft and we would observe the fragments. Ablation of a dust layer on the spacecraft's z panel (remote instrument viewing direction) when rotated towards the Sun is a reasonable alternative. We could also measure an acceleration for a subset of 18 aggregates, which is directed away from the Sun and can be explain by a rocket effect, which requires a minimum ice fraction of the order of 0.1 per cent.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

techniques: image processing
comets: general
comets: individual: 67P/Churyumov-Gerasimenko

Publication and Content Type

ref (subject category)
art (subject category)

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