Modelling of the outburst on 2015 July 29 observed with OSIRIS cameras in the Southern hemisphere of comet 67P/Churyumov–Gerasimenko
| Autor: | N. Oklay, Holger Sierks, Stefano Mottola, F. Preusker, Ivano Bertini, J.-R. Kramm, Géza Kovács, Jessica Agarwal, Michael Küppers, Nicolas Fougere, Giampiero Naletto, Matteo Massironi, F. Moreno, Mohamed Ramy El-Maarry, Hans Rickman, Sebastien Besse, Stephen C. Lowry, Stubbe F. Hviid, Monica Lazzarin, Xian Shi, L. M. Lara, A. Gicquel, Marco Fulle, S. Höfner, M. A. Barucci, J. B. Vincent, Jörg Knollenberg, M. F. A'Hearn, V. Da Deppo, Olivier Groussin, P. Gutiérrez-Marquez, Rafael Rodrigo, Francesco Marzari, Nafiseh Masoumzadeh, X. Hu, M. De Cecco, M. Rose, Ekkehard Kührt, Stefano Debei, Imre Toth, Cesare Barbieri, Björn Davidsson, Sonia Fornasier, Cecilia Tubiana, Jakob Deller, Gabriele Cremonese, Maurizio Pajola, Zhong-Yi Lin, F. Scholten, Wing-Huen Ip, Laurent Jorda, Detlef Koschny, Nicolas Thomas, P. J. Gutierrez, Marc Hofmann, Steve Boudreault, J. J. Lopez Moreno, Philippe Lamy, Dennis Bodewits, E. Frattin, Carsten Güttler, H. U. Keller, J. L. Bertaux |
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| Přispěvatelé: | Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research (MPS), Max-Planck-Gesellschaft, PI-DSMC software package, DLR Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Department of Astronomy [College Park], University of Maryland [College Park], University of Maryland System-University of Maryland System, Department of Climate and Space Sciences and Engineering (CLaSP), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Centro di Ateneo di Studi e Attività Spaziali 'Giuseppe Colombo' (CISAS), Università degli Studi di Padova = University of Padua (Unipd), Institute of Space Science [Taiwan], National Central University [Taiwan] (NCU), Dipartimento di Fisica e Astronomia 'Galileo Galilei', Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), International Space Science Institute [Bern] (ISSI), Centro de Astrobiologia [Madrid] (CAB), Instituto Nacional de Técnica Aeroespacial (INTA)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), European Space Research and Technology Centre (ESTEC), Agence Spatiale Européenne = European Space Agency (ESA), Space Research Centre of Polish Academy of Sciences (CBK), Polska Akademia Nauk = Polish Academy of Sciences (PAN), Department of Physics and Astronomy [Uppsala], Uppsala University, Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (IGEP), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Research and Scientific Support Department, ESTEC (RSSD), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), INAF - Osservatorio Astronomico di Padova (OAPD), Istituto Nazionale di Astrofisica (INAF), CNR Institute for Photonics and Nanotechnologies (IFN), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Department of Industrial Engineering [Padova], University of Trento [Trento], Physikalisches Institut [Bern], Universität Bern [Bern] (UNIBE), INAF - Osservatorio Astronomico di Trieste (OAT), Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Department of Mechatronics, Optics and Mechanical Engineering Informatics (MOMEI), Budapest University of Technology and Economics [Budapest] (BME), European Space Astronomy Centre (ESAC), School of Physical Sciences [Canterbury], University of Kent [Canterbury], Department of Information Engineering [Padova] (DEI), NASA Ames Research Center (ARC), Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), ITA, USA, GBR, FRA, DEU, Max-Planck-Institut für Sonnensystemforschung (MPS), Universita degli Studi di Padova, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Instituto Nacional de Técnica Aeroespacial (INTA), European Space Agency (ESA), European Space Agency (ESA)-European Space Agency (ESA), Consiglio Nazionale delle Ricerche [Roma] (CNR), Universität Bern [Bern], California Institute of Technology (CALTECH)-NASA |
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Infrared Comet Data analysis Comets: individual: 67P/Churyumov-Gerasimenko Methods: data analysis Methods: numerical Methods: observational 67P/Churyumov Coma (optics) Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences modelling comet Rosetta 0103 physical sciences Comets High spatial resolution Astrophysics::Solar and Stellar Astrophysics OSIRIS 010303 astronomy & astrophysics Southern Hemisphere Observations Astrophysics::Galaxy Astrophysics Gerasimenko 0105 earth and related environmental sciences Numerical [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS]Physics [physics] Physics 67P biology 520 Astronomy outburt Astronomy Astronomy and Astrophysics Radius 620 Engineering biology.organism_classification Outgassing 13. Climate action Space and Planetary Science Astrophysics::Earth and Planetary Astrophysics Osiris [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2017, 469 (Suppl_2), pp.S178-S185. ⟨10.1093/mnras/stx1441⟩ Monthly notices of the Royal Astronomical Society 469 (2017): S178–S185. doi:10.1093/mnras/stx1441 info:cnr-pdr/source/autori:Gicquel, A.; Rose, M.; Vincent, J. B.; Davidsson, B.; Bodewits, D.; A'Hearn, M. F.; Agarwal, J.; Fougere, N.; Sierks, H.; Bertini, I.; Lin, Z. Y.; Barbieri, C.; Lamy, P. L.; Rodrigo, R.; Koschny, D.; Rickman, H.; Keller, H. U.; Barucci, M. A.; Bertaux, J. L.; Besse, S.; Boudreault, S.; Cremonese, G.; Da Deppo, V.; Debei, S.; Deller, J.; De Cecco, M.; Frattin, E.; El-Maarry, M. R.; Fornasier, S.; Fulle, M.; Groussin, O.; Gutiérrez, P. J.; Gutiérrez-Marquez, P.; Güttler, C.; Höfner, S.; Hofmann, M.; Hu, X.; Hviid, S. F.; Ip, W. H.; Jorda, L.; Knollenberg, J.; Kovacs, G.; Kramm, J. R.; Kührt, E.; Küppers, M.; Lara, L. M.; Lazzarin, M.; Moreno, J. J.Lopez; Lowry, S.; Marzari, F.; Masoumzadeh, N.; Massironi, M.; Moreno, F.; Mottola, S.; Naletto, G.; Oklay, N.; Pajola, M.; Preusker, F.; Scholten, F.; Shi, X.; Thomas, N.; Toth, I.; Tubiana, C./titolo:Modelling of the outburst on 2015 July 29 observed with OSIRIS cameras in the Southern hemisphere of comet 67P%2FChuryumov-Gerasimenko/doi:10.1093%2Fmnras%2Fstx1441/rivista:Monthly notices of the Royal Astronomical Society (Print)/anno:2017/pagina_da:S178/pagina_a:S185/intervallo_pagine:S178–S185/volume:469 Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 469 (Suppl_2), pp.S178-S185. ⟨10.1093/mnras/stx1441⟩ Gicquel, A.; Rose, M.; Vincent, J.-B.; Davidsson, B.; Bodewits, D.; A’Hearn, M. F.; Agarwal, J.; Fougere, N.; Sierks, H.; Bertini, I.; Lin, Z.-Y.; Barbieri, C.; Lamy, P. L.; Rodrigo, Rafael; Koschny, D.; Rickman, H.; Keller, H. U.; Barucci, M. A.; Bertaux, J.-L.; Besse, S.; ... (2017). Modelling of the outburst on 2015 July 29 observed with OSIRIS cameras in the Southern hemisphere of comet 67P/Churyumov–Gerasimenko. Monthly notices of the Royal Astronomical Society, 469(Suppl_2), S178-S185. Oxford University Press 10.1093/mnras/stx1441 |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | International audience; Images of the nucleus and the coma (gas and dust) of comet 67P/Churyumov– Gerasimenko have been acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) cameras since 2014 March using both the wide-angle camera and the narrow-angle camera (NAC). We use images from the NAC camera to study a bright outburst observed in the Southern hemisphere on 2015 July 29. The high spatial resolution of the NAC is needed to localize the source point of the outburst on the surface of the nucleus. The heliocentric distance is 1.25 au and the spacecraft–comet distance is 186 km. Aiming to better understand the physics that led to the outgassing, we used the Direct Simulation Monte Carlo method to study the gas flow close to the nucleus and the dust trajectories. The goal is to understand the mechanisms producing the outburst. We reproduce the opening angle of the outburst in the model and constrain the outgassing ratio between the outburst source and the local region. The outburst is in fact a combination of both gas and dust, in which the active surface is approximately 10 times more active than the average rate found in the surrounding areas. We need a number of dust particles 7.83 × 1011 to 6.90 × 1015 (radius 1.97–185 μm), which correspond to a mass of dust (220–21) × 103 kg. |
| Databáze: | OpenAIRE |
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