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Investigating the p...
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Lin, Zhong-YiNatl Cent Univ, Inst Astron, Chungli 32054, Taiwan
(author)
Investigating the physical properties of outbursts on comet 67P/Churyumov-Gerasimenko
- Article/chapterEnglish2017
Publisher, publication year, extent ...
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2017-12-04
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OXFORD UNIV PRESS,2017
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LIBRIS-ID:oai:DiVA.org:uu-376697
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-376697URI
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https://doi.org/10.1093/mnras/stx2768DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Cometary outbursts on several comets have been observed both by ground-based telescopes and by in situ instruments on spacecraft. However, the mechanism behind these phenomena and their physical properties are still unclear. The optical, spectrocopic and infrared remote imaging system (OSIRIS) onboard the Rosetta spacecraft provided first-hand information on the outbursts from comet 67P/Churyumov-Gerasimenko during its perihelion passage in 2015. The physical properties of the outbursts can be investigated by examining the time series of these high-resolution images. An analysis is made of the wide- and narrow-angle images obtained during the monitoring of the outburst sequences, which occurred between July and September in 2015. A ring-masking technique is used to calculate the excess brightness of the outbursts. The ejected mass and expansion velocity of the outbursts is estimated from differences in images made with the same filter (orange filter). The calculated excess brightness from these outburst plumes ranges from a few per cent to 28 per cent. In some major outbursts, the brightness contribution from the outburst plume can be one or two times higher than that of the typical coma jet activities. The strongest event was the perihelion outburst detected just a few hours before perihelion. The mass ejection rate during a generic outburst could reach a few per cent of the steady-state value of the dust coma. Transient events are detected by studying the brightness slope of the outburst plume with continuous streams of outflowing gas and dust triggered by driving mechanisms, as yet not understood, which remain active for several minutes to less than a few hours.
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Knollenberg, J.Inst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany
(author)
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Vincent, J. -B
(author)
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A'Hearn, M. F.Univ Maryland, Dept Astron, College Pk, MD 20742 USA
(author)
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Ip, W-H
(author)
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Sierks, H.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Barbieri, C.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy;Univ Padua, Ctr Ateneo Studi & Attivita Spaziali Giuseppe Col, Via Venezia 15, I-35131 Padua, Italy
(author)
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Lamy, P. L.CNRS, Lab Astrophys Marseille, UMR 7326, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France
(author)
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Rodrigo, R.CSIC, INTA, Ctr Astrobiol, ESA,ESAC, POB 78,E 8691, Madrid, Spain;Int Space Sci Inst, Hallerstr 6, CH-3012 Bern, Switzerland
(author)
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Koschny, D.Univ Maryland, Dept Astron, College Pk, MD 20742 USA;European Space Agcy, Res & Sci Support Dept, NL-2201 Noordwijk, Netherlands
(author)
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Rickman, H.PAS Space Res Ctr, Bartycka 18A, PL-00716 Warsaw, Poland
(author)
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Keller, H. U.Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterr Phys IGEP, D-38106 Braunschweig, Germany
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Mottola, S.Inst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany
(author)
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Bodewits, D.
(author)
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Agarwal, J.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Barucci, M. A.Univ Paris Diderot, LESIA Observ Paris, CNRS, UPMC Univ Paris 06, 5 Pl J Janssen, F-92195 Meudon, France
(author)
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Bertaux, J. -L
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Bertini, I.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy
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Cremonese, G.INAF, Osservatorio Astron Padova, Vic Osservatorio 5, I-35122 Padua, Italy
(author)
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Deller, J.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Da Deppo, V.CNR IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padua, Italy
(author)
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Davidsson, BjörnUppsala universitet,Teoretisk astrofysik(Swepub:uu)bjoda312
(author)
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Debei, S.Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy
(author)
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De Cecco, M.Univ Trento, Via Sommarive 9, I-38123 Trento, Italy
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Fornasier, S.Univ Paris Diderot, LESIA Observ Paris, CNRS, UPMC Univ Paris 06, 5 Pl J Janssen, F-92195 Meudon, France
(author)
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Fulle, M.INAF, Osservatorio Astron Trieste, Via Tiepolo 11, I-34143 Trieste, Italy
(author)
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Groussin, O.CNRS, Lab Astrophys Marseille, UMR 7326, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France
(author)
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Gutierrez, P. J.CSIC, Inst Astrofis Andalucia, C Glorieta Astron, E-18008 Granada, Spain
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Guettler, C.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Hofmann, M.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Hviid, S. F.Inst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany
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Jorda, L.CNRS, Lab Astrophys Marseille, UMR 7326, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France;Aix Marseille Univ, 38 Rue Frederic Joliot Curie, F-13388 Marseille, France
(author)
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Kovacs, G.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Kramm, J. -R
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Kuehrt, E.Inst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany
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Kuppers, M.CSIC, INTA, Ctr Astrobiol, ESA,ESAC, POB 78,E 8691, Madrid, Spain
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Lai, I. -L
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Lara, L. M.CSIC, Inst Astrofis Andalucia, C Glorieta Astron, E-18008 Granada, Spain
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Lazzarin, M.Univ Padua, Ctr Ateneo Studi & Attivita Spaziali Giuseppe Col, Via Venezia 15, I-35131 Padua, Italy
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Lee, J-C
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Lopez-Moreno, J. J.CSIC, Inst Astrofis Andalucia, C Glorieta Astron, E-18008 Granada, Spain
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Marzari, F.Univ Padua, Dept Phys & Astron G Galilei, Vic Osservatorio 3, I-35122 Padua, Italy
(author)
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Naletto, G.Univ Padua, Dept Informat Engn, Via Gradenigo 6-B, I-35131 Padua, Italy
(author)
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Oklay, N.Inst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany;Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Ott, T.Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26111 Oldenburg, Germany
(author)
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Drolshagen, E.Carl von Ossietzky Univ Oldenburg, Ammerlander Heerstr 114, D-26111 Oldenburg, Germany
(author)
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Shi, X.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Thomas, N.Univ Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, Switzerland
(author)
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Tubiana, C.Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany
(author)
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Natl Cent Univ, Inst Astron, Chungli 32054, TaiwanInst Planetenforsch, Deuisch Zentrum Luft & Raumfahri DLR, Rutherfordstr 2, D-12489 Berlin, Germany
(creator_code:org_t)
Related titles
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In:Monthly notices of the Royal Astronomical Society: OXFORD UNIV PRESS469, s. S731-S7400035-87111365-2966
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- By the author/editor
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Lin, Zhong-Yi
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Knollenberg, J.
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Vincent, J. -B
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A'Hearn, M. F.
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Ip, W-H
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Sierks, H.
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show more...
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Barbieri, C.
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Lamy, P. L.
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Rodrigo, R.
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Koschny, D.
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Rickman, H.
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Keller, H. U.
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Mottola, S.
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Bodewits, D.
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Agarwal, J.
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Barucci, M. A.
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Bertaux, J. -L
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Bertini, I.
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Cremonese, G.
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Deller, J.
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Da Deppo, V.
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Davidsson, Björn
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Debei, S.
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De Cecco, M.
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Fornasier, S.
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Fulle, M.
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Groussin, O.
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Gutierrez, P. J.
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Guettler, C.
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Hofmann, M.
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Hviid, S. F.
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Jorda, L.
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Kovacs, G.
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Kramm, J. -R
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Kuehrt, E.
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Kuppers, M.
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Lai, I. -L
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Lara, L. M.
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Lazzarin, M.
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Lee, J-C
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Lopez-Moreno, J. ...
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Marzari, F.
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Naletto, G.
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Oklay, N.
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Ott, T.
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Drolshagen, E.
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Shi, X.
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Thomas, N.
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Tubiana, C.
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