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Summer fireworks on comet 67P

Vincent, J. -B (author)
A'Hearn, M. F. (author)
Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
Lin, Z. -Y (author)
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El-Maarry, M. R. (author)
Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland.
Pajola, M. (author)
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.;Univ Padua, Ctr Ateneo Studi Attivita Spaziali Giuseppe Colom, Via Venezia 15, I-35131 Padua, Italy.
Sierks, H. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Barbieri, C. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservat 3, I-35122 Padua, Italy.
Lamy, P. L. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.
Rodrigo, R. (author)
CSIC, ESA, ESAC, Ctr Astrobiol,INTA, POB 78, E-28691 Madrid, Spain.;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland.
Koschny, D. (author)
European Space Agcy, Sci Support Off, NL-2201 Noordwijk, Netherlands.
Rickman, Hans (author)
Uppsala universitet,Teoretisk astrofysik,PAS Space Res Ctr, Poland
Keller, H. U. (author)
TU Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.
Agarwal, J. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Barucci, M. A. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, LESIA,Observat Paris, 5 Pl J Janssen, F-92195 Meudon Pricipal, France.
Bertaux, J. -L (author)
Bertini, I. (author)
Univ Padua, Ctr Ateneo Studi Attivita Spaziali Giuseppe Colom, Via Venezia 15, I-35131 Padua, Italy.
Besse, S. (author)
ESA ESAC, Camino Bajo Castillo S-N, E-28692 Madrid, Spain.
Bodewits, D. (author)
Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
Cremonese, G. (author)
INAF Osservat Astron Padova, Vicolo Osservat 5, I-35122 Padua, Italy.
Da Deppo, V. (author)
CNR IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy.
Davidsson, B. (author)
NASA, Jet Prop Lab, 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, Via Sommarive 9, I-38123 Trento, Italy.
Deller, J. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Fornasier, S. (author)
Univ Paris Diderot, UPMC Univ Paris 06, CNRS, LESIA,Observat Paris, 5 Pl J Janssen, F-92195 Meudon Pricipal, France.
Fulle, M. (author)
INAF Osservat Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy.
Gicquel, A. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Groussin, O. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.
Gutierrez, P. J. (author)
CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.
Gutierrez-Marquez, P. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Guettler, C. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Hoefner, S. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.;TU Braunschweig, Inst Geophys & Extraterr Phys, D-38106 Braunschweig, Germany.
Hofmann, M. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Hviid, S. F. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Ip, W. -H (author)
Jorda, L. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.
Knollenberg, J. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Kovacs, G. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.;Budapest Univ Technol & Econ, Dept Mechatron Opt & Engn Informat, Muegyet Rkp 3, Budapest, Hungary.
Kramm, J. -R (author)
Kuehrt, E. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Kueppers, M. (author)
ESA ESAC, Camino Bajo Castillo S-N, E-28692 Madrid, Spain.
Lara, L. M. (author)
CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.
Lazzarin, M. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservat 3, I-35122 Padua, Italy.
Lopez Moreno, J. J. (author)
CSIC, Inst Astrofis Andalucia, Glorieta Astron, E-18008 Granada, Spain.
Marzari, F. (author)
Univ Padua, Dept Phys & Astron G Galilei, Vic Osservat 3, I-35122 Padua, Italy.
Massironi, M. (author)
Univ Padua, Dipartimiento Geosci, Via Granedigo 6, I-35131 Padua, Italy.
Mottola, S. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Naletto, G. (author)
Univ Padua, Ctr Ateneo Studi Attivita Spaziali Giuseppe Colom, 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)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Preusker, F. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Scholten, F. (author)
DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
Shi, X. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
Thomas, N. (author)
Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland.
Toth, I. (author)
Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France.;Hungarian Acad Sci, Observ, POB 67, H-1525 Budapest, Hungary.
Tubiana, C. (author)
Max Planck Inst Sonnensyst Forsch, Justus Von Liebig Weg 3, D-37077 Gottingen, Germany.
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Univ Maryland, Dept Astron, College Pk, MD 20742 USA Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland. (creator_code:org_t)
2016-09-22
2016
English.
In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 462, s. S184-S194
Related links:
https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
https://academic.oup...
https://urn.kb.se/re...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • During its 2 yr mission around comet 67P/Churyumov-Gerasimenko, ESA's Rosetta spacecraft had the unique opportunity to follow closely a comet in the most active part of its orbit. Many studies have presented the typical features associated with the activity of the nucleus, such as localized dust and gas jets. Here, we report on series of more energetic transient events observed during the 3 months surrounding the comet's perihelion passage in 2015 August. We detected and characterized 34 outbursts with the Rosetta cameras, one every 2.4 nucleus rotations. We identified three main dust plume morphologies associated with these events: a narrow jet, a broad fan, and more complex plumes featuring both previous types together. These plumes are comparable in scale and temporal variation to what has been observed on other comets. We present a map of the outbursts' source locations, and discuss the associated topography. We find that the spatial distribution sources on the nucleus correlate well with morphological region boundaries, especially in areas marked by steep scarps or cliffs. Outbursts occur either in the early morning or shortly after the local noon, indicating two potential processes: morning outbursts may be triggered by thermal stresses linked to the rapid change of temperature; afternoon events are most likely related to the diurnal or seasonal heat wave reaching volatiles buried under the first surface layer. In addition, we propose that some events can be the result of a completely different mechanism, in which most of the dust is released upon the collapse of a cliff.

Subject headings

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

Keyword

comets: individual: 67P/Churyumov-Gerasimenko

Publication and Content Type

ref (subject category)
art (subject category)

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