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87 results on '"López-Moreno, J.J."'

1. Regional unit definition for the nucleus of comet 67P/Churyumov-Gerasimenko on the SHAP7 model

Author

Thomas, N., El Maarry, M.R., Theologou, P., Preusker, F., Scholten, F., Jorda, L., Hviid, S.F., Marschall, R., Kührt, E., Naletto, G., Sierks, H., Lamy, P.L., Rodrigo, R., Koschny, D., Davidsson, B., Barucci, M.A., Bertaux, J.L., Bertini, I., Bodewits, D., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Fornasier, S., Fulle, M., Groussin, O., Gutièrrez, P.J., Güttler, C., Ip, W.H., Keller, H.U., Knollenberg, J., Lara, L.M., Lazzarin, M., Lòpez-Moreno, J.J., Marzari, F., Tubiana, C., and Vincent, J.B.

Published
2018
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3. On deviations from free-radial outflow in the inner coma of comet 67P/Churyumov–Gerasimenko

Author

Gerig, S.-B., Marschall, R., Thomas, N., Bertini, I., Bodewits, D., Davidsson, B., Fulle, M., Ip, W.-H., Keller, H.U., Küppers, M., Preusker, F., Scholten, F., Su, C.C., Toth, I., Tubiana, C., Wu, J.-S., Sierks, H., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Agarwal, J., Barucci, M.A., Bertaux, J.-L., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., Fornasier, S., Groussin, O., Gutierrez, P.J., Güttler, C., Hviid, S.F., Jorda, L., Knollenberg, J., Kramm, J.-R., Kührt, E., Lara, L.M., Lazzarin, M., Lopez Moreno, J.J., Marzari, F., Mottola, S., Naletto, G., Oklay, N., and Vincent, J.-B.

Published
2018
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5. Meter-scale thermal contraction crack polygons on the nucleus of comet 67P/Churyumov-Gerasimenko

Author

Auger, A.-T., Groussin, O., Jorda, L., El-Maarry, M.R., Bouley, S., Séjourné, A., Gaskell, R., Capanna, C., Davidsson, B., Marchi, S., Höfner, S., Lamy, P.L., Sierks, H., Barbieri, C., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., Agarwal, J., A’Hearn, M.F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Fornasier, S., Fulle, M., Gutiérrez, P.J., Güttler, C., Hviid, S., Ip, W.-H., Knollenberg, J., Kramm, J.-R., Kührt, E., Küppers, M., Lara, L.M., Lazzarin, M., Lopez Moreno, J.J., Marzari, F., Massironi, M., Michalik, H., Naletto, G., Oklay, N., Pommerol, A., Sabau, L., Thomas, N., Tubiana, C., Vincent, J.-B., and Wenzel, K.-P.

Published
2018
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6. The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations

Author

Jorda, L., Gaskell, R., Capanna, C., Hviid, S., Lamy, P., Ďurech, J., Faury, G., Groussin, O., Gutiérrez, P., Jackman, C., Keihm, S.J., Keller, H.U., Knollenberg, J., Kührt, E., Marchi, S., Mottola, S., Palmer, E., Schloerb, F.P., Sierks, H., Vincent, J.-B., A’Hearn, M.F., Barbieri, C., Rodrigo, R., Koschny, D., Rickman, H., Barucci, M.A., Bertaux, J.L., Bertini, I., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Fornasier, S., Fulle, M., Güttler, C., Ip, W.-H., Kramm, J.R., Küppers, M., Lara, L.M., Lazzarin, M., Lopez Moreno, J.J., Marzari, F., Naletto, G., Oklay, N., Thomas, N., Tubiana, C., and Wenzel, K.-P.

Published
2016
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11. A new numerical model for the simulation of ELF wave propagation and the computation of eigenmodes in the atmosphere of Titan: Did Huygens observe any Schumann resonance?

Author

Simões, F., Grard, R., Hamelin, M., López-Moreno, J.J., Schwingenschuh, K., Béghin, C., Berthelier, J.-J., Besser, B., Brown, V.J.G., Chabassière, M., Falkner, P., Ferri, F., Fulchignoni, M., Hofe, R., Jernej, I., Jeronimo, J.M., Molina-Cuberos, G.J., Rodrigo, R., Svedhem, H., Tokano, T., and Trautner, R.

Published
2007
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13. The BepiColombo Laser Altimeter (BELA): Concept and baseline design

Author

Thomas, N., Spohn, T., Barriot, J.-P., Benz, W., Beutler, G., Christensen, U., Dehant, V., Fallnich, C., Giardini, D., Groussin, O., Gunderson, K., Hauber, E., Hilchenbach, M., Iess, L., Lamy, P., Lara, L.-M., Lognonné, P., Lopez-Moreno, J.J., Michaelis, H., Oberst, J., Resendes, D., Reynaud, J.-L., Rodrigo, R., Sasaki, S., Seiferlin, K., Wieczorek, M., and Whitby, J.

Published
2007
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28. The GIADA experiment for ROSETTA mission to comet 46P/wirtanen: Design and performances

Author

Bussoletti, E., Colangeli, L., Lopez Moreno, J.J., Epifani, E., Mennella, V., Palomba, E., Palumbo, P., Rotundi, A., Vergara, S., Girela, F., Herranz, M., Jeronimo, J.M., Lopez-Jimenez, A.C., Molina, A., Moreno, F., Olivares, I., Rodrigo, R., Rodriguez-Gomez, J.F., Sanchez, J., Mc Donnell, J.A.M., Leese, M., Lamy, P., Perruchot, S., Crifo, J.F., Fulle, M., Perrin, J.M., Angrilli, F., Benini, E., Casini, L., Cherubini, G., Coradini, A., Giovane, F., Grün, E., Gustafson, B., Maag, C., and Weissmann, P.R.

Published
1999
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30. Findings and questions from ten years of analysis of the PWA-HASI data collected onboard the HUYGENS probe in the atmosphere and on the surface of Titan

Author

Hamelin, Michel, Lethuillier, Anthony, Le Gall, Alice, Grard, R., Ciarletti, Valérie, Béghin, Christian, Schwingenschuh, Konrad, Lorenz, R.D., López-Moreno, J.J., Jernej, I., Brown, V., Ferri, F., Godard, R., Wattieaux, Gaëtan, 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), European Space Research and Technology Centre (ESTEC), European Space Agency (ESA)-European Space Agency (ESA), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Space Research Institute of Austrian Academy of Sciences (IWF), Austrian Academy of Sciences (OeAW), Johns Hopkins University (JHU), Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Centro di Ateneo di Studi e Attività Spaziali 'Giuseppe Colombo' (CISAS), Universita degli Studi di Padova, Department of Mathematics and Computer Science [Kingston], Royal Military College of Canada, Plasmas Réactifs Hors Equilibre (LAPLACE-PRHE), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), Università degli Studi di Padova = University of Padua (Unipd), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)

Subjects
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

31. Noteworthy Returns from Titan’s Schumann Resonance revealed by HASI-PWA Huygens Instrument

Author

Béghin, Christian, Hamelin, Michel, Grard, R., Sotin, C., Schwingenschuh, Konrad, López-­‐Moreno, J.J., Whitten, R.C., Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), 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), European Space Research and Technology Centre (ESTEC), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Space Research Institute of Austrian Academy of Sciences (IWF), Austrian Academy of Sciences (OeAW), Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), SETI Institute, European Space Agency (ESA)-European Space Agency (ESA), and California Institute of Technology (CALTECH)-NASA

Subjects
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Abstract

International audience; After the confirmed absence of any detectable lightning activity in Titan’s atmosphere, the only conceivable generation mechanism of Titan’s Schumann Resonances comes from sets of ionopause current sheets induced by Saturn’s magnetosphere interaction.A day-­‐light/ram-­‐side atmospheric profile model applicable to Huygens descent is constrained by the Modal Equations of the observed 2nd SR Eigenmode.The same method allows to constrain the thickness and the average permittivity of the icy crust, and to reveal the presence of a liquid water ocean buried from 60 to 80 km below the surface.The model accounts for the observation of the 2nd mode only, because the meridional orientation of Saturn’s magnetic field at the Titan’s interface during bi-­‐polar condiLons.The strength of secondary magnetic field induced in the atmosphere by the current sheets is decreasing from a few nT at 1000 km down to about 0.3 nT at 200 km altitude, extending far beneath the surface and the buried ocean.The fleeting remanence of this magnetic field after Titan would have left the Saturn’s magnetosphere could explain the existence of a “fossil” field observed in such a case

Published
2015

32. Large-scale dust jets in the coma of 67P/Churyumov-Gerasimenko as seen by the OSIRIS instrument onboard Rosetta

Author

Lara, L.M., Lowry, S., Vincent, J.-B., Gutierrez, P.J., Rożek, A., La Forgia, F., Oklay, N., Sierks, H., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., Agarwal, J., Auger, A.-T., A'Hearn, M.F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Besse, S., Bodewits, D., Cremonese, G., Davidsson, B., Da Deppo, V., Debei, S., De Cecco, M., El-Maarry, M.R., Ferri, F., Fornasier, S., Fulle, M., Groussin, O., Gutiérrez-Marques, P., Güttler, C., Hviid, S.F., Ip, W.-H., Jorda, L., Knollenberg, J., Kovacs, G., Kramm, J.-R., Kührt, E., Küppers, M., Lazzarin, M., Lin, Z.-Y., López-Moreno, J.J., Magrin, S., Marzari, F., Michalik, H., Moissl-Fraund, R., Moreno, F., Mottola, S., Naletto, G., Pajola, M., Pommerol, A., Thomas, N., Sabau, M.D., Tubiana, C., Lara, L.M., Lowry, S., Vincent, J.-B., Gutierrez, P.J., Rożek, A., La Forgia, F., Oklay, N., Sierks, H., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., Agarwal, J., Auger, A.-T., A'Hearn, M.F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Besse, S., Bodewits, D., Cremonese, G., Davidsson, B., Da Deppo, V., Debei, S., De Cecco, M., El-Maarry, M.R., Ferri, F., Fornasier, S., Fulle, M., Groussin, O., Gutiérrez-Marques, P., Güttler, C., Hviid, S.F., Ip, W.-H., Jorda, L., Knollenberg, J., Kovacs, G., Kramm, J.-R., Kührt, E., Küppers, M., Lazzarin, M., Lin, Z.-Y., López-Moreno, J.J., Magrin, S., Marzari, F., Michalik, H., Moissl-Fraund, R., Moreno, F., Mottola, S., Naletto, G., Pajola, M., Pommerol, A., Thomas, N., Sabau, M.D., and Tubiana, C.

Abstract

During the most recent perihelion passage in 2009 of comet 67P/Churyumov-Gerasimenko (67P), ground-based observations showed an anisotropic dust coma where jet-like features were detected at ~ 1.3 AU from the Sun. The current perihelion passage is exceptional as the Rosetta spacecraft is monitoring the nucleus activity since March 2014, when a clear dust coma was already surrounding the nucleus at 4.3 AU from the Sun. Subsequently, the OSIRIS camera also witnessed an outburst in activity between April 27 and 30, and since mid-July, the dust coma at rh ~ 3.7-3.6 AU preperihelion is clearly non-isotropic, pointing to the existence of dust jet-like features. We aim to ascertain on the nucleus surface the origin of the dust jet-like features detected as early as in mid-July 2014. This will help to establish how the localized comet nucleus activity compares with that seen in previous apparitions and will also help following its evolution as the comet approaches its perihelion, at which phase most of the jets were detected from ground-based observations. Determining these areas also allows locating them in regions on the nucleus with spectroscopic or geomorphological distinct characteristics. Methods. Three series of dust images of comet 67P obtained with the Wide Angle Camera (WAC) of the OSIRIS instrument onboard the Rosetta spacecraft were processed with different enhancement techniques. This was made to clearly show the existence of jet-like features in the dust coma, whose appearance toward the observer changed as a result of the rotation of the comet nucleus and of the changing observing geometry from the spacecraft. The position angles of these features in the coma together with information on the observing geometry, nucleus shape, and rotation, allowed us to determine the most likely locations on the nucleus surface where the jets originate from. Results. Geometrical tracing of jet sources indicates that the activity of the nucleus of 67P gave rise during July and

Published
2015

33. Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the sun

Author

Rotundi, A., Sierks, H., Della Corte, V., Fulle, M., Gutierrez, P.J., Lara, L., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., López-Moreno, J.J., Accolla, M., Agarwal, J., A'Hearn, M.F., Altobelli, N., Angrilli, F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Bodewits, D., Bussoletti, E., Colangeli, L., Cosi, M., Cremonese, G., Crifo, J.-F., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Esposito, F., Ferrari, M., Fornasier, S., Giovane, F., Gustafson, B., Green, S.F., Groussin, O., Grün, E., Güttler, C., Herranz, M.L., Hviid, S.F., Ip, W., Ivanovski, S., Jerónimo, J.M., Jorda, L., Knollenberg, J., Kramm, R., Kührt, E., Küppers, M., Lazzarin, M., Leese, M.R., López-Jiménez, A.C., Lucarelli, F., Lowry, S.C., Marzari, F., Epifani, E.M., McDonnell, J.A.M., Mennella, V., Michalik, H., Molina, A., Morales, R., Moreno, F., Mottola, S., Naletto, G., Oklay, N., Ortiz, J.L., Palomba, E., Palumbo, P., Perrin, J.-M., Rodríguez, J., Sabau, L., Snodgrass, C., Sordini, R., Thomas, N., Tubiana, C., Vincent, J.-B., Weissman, P., Wenzel, K.-P., Zakharov, V., Zarnecki, J.C., Rotundi, A., Sierks, H., Della Corte, V., Fulle, M., Gutierrez, P.J., Lara, L., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., López-Moreno, J.J., Accolla, M., Agarwal, J., A'Hearn, M.F., Altobelli, N., Angrilli, F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Bodewits, D., Bussoletti, E., Colangeli, L., Cosi, M., Cremonese, G., Crifo, J.-F., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Esposito, F., Ferrari, M., Fornasier, S., Giovane, F., Gustafson, B., Green, S.F., Groussin, O., Grün, E., Güttler, C., Herranz, M.L., Hviid, S.F., Ip, W., Ivanovski, S., Jerónimo, J.M., Jorda, L., Knollenberg, J., Kramm, R., Kührt, E., Küppers, M., Lazzarin, M., Leese, M.R., López-Jiménez, A.C., Lucarelli, F., Lowry, S.C., Marzari, F., Epifani, E.M., McDonnell, J.A.M., Mennella, V., Michalik, H., Molina, A., Morales, R., Moreno, F., Mottola, S., Naletto, G., Oklay, N., Ortiz, J.L., Palomba, E., Palumbo, P., Perrin, J.-M., Rodríguez, J., Sabau, L., Snodgrass, C., Sordini, R., Thomas, N., Tubiana, C., Vincent, J.-B., Weissman, P., Wenzel, K.-P., Zakharov, V., and Zarnecki, J.C.

Abstract

Critical measurements for understanding accretion and the dust/gas ratio in the solar nebula, where planets were forming 4.5 billion years ago, are being obtained by the GIADA (Grain Impact Analyser and Dust Accumulator) experiment on the European Space Agency's Rosetta spacecraft orbiting comet 67P/Churyumov-Gerasimenko. Between 3.6 and 3.4 astronomical units inbound, GIADA and OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) detected 35 outflowing grains of mass 10-10 to 10-7 kilograms, and 48 grains of mass 10-5 to 10-2 kilograms, respectively. Combined with gas data from the MIRO (Microwave Instrument for the Rosetta Orbiter) and ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) instruments, we find a dust/gas mass ratio of 4 ± 2 averaged over the sunlit nucleus surface. A cloud of larger grains also encircles the nucleus in bound orbits from the previous perihelion. The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails. © 2015, American Association for the Advancement of Science. All rights reserved.

Published
2015

34. Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development

Author

Lin, Z.-Y., Ip, W.-H., Lai, I.-L., Lee, J.-C., Vincent, J.-B., Lara, L.M., Bodewits, D., Sierks, H., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., Agarwal, J., A'Hearn, M.F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Fornasier, S., Fulle, M., Groussin, O., Gutiérrez, P.J., Güttler, C., Hviid, S.F., Jorda, L., Knollenberg, J., Kovacs, G., Kramm, J.-R., Kührt, E., Küppers, M., La Forgia, F., Lazzarin, M., López-Moreno, J.J., Lowry, S.C., Marzari, F., Michalik, H., Mottola, S., Naletto, G., Oklay, N., Pajola, M., Rożek, A., Thomas, N., Liao, Y., Tubiana, C., Lin, Z.-Y., Ip, W.-H., Lai, I.-L., Lee, J.-C., Vincent, J.-B., Lara, L.M., Bodewits, D., Sierks, H., Barbieri, C., Lamy, P.L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H.U., Agarwal, J., A'Hearn, M.F., Barucci, M.A., Bertaux, J.-L., Bertini, I., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Fornasier, S., Fulle, M., Groussin, O., Gutiérrez, P.J., Güttler, C., Hviid, S.F., Jorda, L., Knollenberg, J., Kovacs, G., Kramm, J.-R., Kührt, E., Küppers, M., La Forgia, F., Lazzarin, M., López-Moreno, J.J., Lowry, S.C., Marzari, F., Michalik, H., Mottola, S., Naletto, G., Oklay, N., Pajola, M., Rożek, A., Thomas, N., Liao, Y., and Tubiana, C.

Abstract

Aims. The OSIRIS camera onboard the Rosetta spacecraft obtained close-up views of the dust coma of comet 67P. The jet structures can be used to trace their source regions and to examine the possible effect of gas-surface interaction. Methods. We analyzed the wide-angle images obtained in the special dust observation sequences between August and September 2014. The jet features detected in different images were compared to study their time variability. The locations of the potential source regions of some of the jets are identified by ray tracing. We used a ring-masking technique to calculate the brightness distribution of dust jets along the projected distance. Results. The jets detected between August and September 2014 mostly originated in the Hapi region. Morphological changes appeared over a timescale of several days in September. The brightness slope of the dust jets is much steeper than the background coma. This might be related to the sublimation or fragmentation of the emitted dust grains. Interaction of the expanding gas flow with the cliff walls on both sides of Hapi could lead to erosion and material down-fall to the nucleus surface. © ESO, 2015.

Published
2015

35. Comment on 'Evidence of electrical activity on Titan drawn from the Schumann resonances sent by Huygens probe' by J.A. Morente, J.A. Portí, A. Salinas, E.A. Navarro [doi: 10.1016/j.icarus.2008.02.004]

Author

Hamelin, Michel, Grard, R., López-Moreno, J.J., Schwingenschuh, K., Béghin, Christian, Berthelier, Jean-Jacques, Simões, F., 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), European Space Research and Technology Centre (ESTEC), European Space Agency (ESA)-European Space Agency (ESA), Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Space Research Institute of Austrian Academy of Sciences (IWF), Austrian Academy of Sciences (OeAW), Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), and Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Ionospheres, [SDU]Sciences of the Universe [physics], Titan, Instrumentation, Lightning
Abstract

International audience; Morente et al. [J.A. Morente, J.A. Portí, A. Salinas, E.A. Navarro, 2008. Icarus, doi: 10.1016/j.icarus.2008.02.004] have recently presented a new analysis of the Permittivity, Wave and Altimetry (PWA) measurements made during the descent of the Huygens Probe through the atmosphere of Titan. They claimed the identification of several Schumann resonance harmonics and concluded in favor of a lightning activity on Titan. We report here several reasons for not endorsing this paper.

Published
2009
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37. A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2

Author

Snodgrass, C., Tubiana, C., Vincent, J.-B., Sierks, H., Hviid, S., Moissl, R., Boehnhardt, H., Barbieri, C., Koschny, D., Lamy, P., Rickman, H., Rodrigo, R., Carry, B., Lowry, S.C., Laird, R.J.M., Weissman, P.R., Fitzsimmons, A., Marchi, S., A'Hearn, M., Angrilli, F., Barucci, A., Bertaux, J.-L., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Fornasier, S., Gutiérrez, P., Ip, W.-H., Keller, H.U., Knollenberg, J., Kramm, J.R., Kuehrt, E., Kueppers, M., Lara, L.M., Lazzarin, M., López-Moreno, J.J., Marzari, F., Michalik, H., Naletto, G., Sabau, L., Thomas, N., Wenzel, K.P., Snodgrass, C., Tubiana, C., Vincent, J.-B., Sierks, H., Hviid, S., Moissl, R., Boehnhardt, H., Barbieri, C., Koschny, D., Lamy, P., Rickman, H., Rodrigo, R., Carry, B., Lowry, S.C., Laird, R.J.M., Weissman, P.R., Fitzsimmons, A., Marchi, S., A'Hearn, M., Angrilli, F., Barucci, A., Bertaux, J.-L., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Fornasier, S., Gutiérrez, P., Ip, W.-H., Keller, H.U., Knollenberg, J., Kramm, J.R., Kuehrt, E., Kueppers, M., Lara, L.M., Lazzarin, M., López-Moreno, J.J., Marzari, F., Michalik, H., Naletto, G., Sabau, L., Thomas, N., and Wenzel, K.P.

Abstract

The peculiar object P/2010 A2 was discovered1 in January 2010 and given a cometary designation because of the presence of a trail of material, although there was no central condensation or coma. The appearance of this object, in an asteroidal orbit (small eccentricity and inclination) in the inner main asteroid belt attracted attention as a potential new member of the recently recognized2 class of main-belt comets. If confirmed, this new object would expand the range in heliocentric distance over which main-belt comets are found. Here we report observations of P/2010 A2 by the Rosetta spacecraft. We conclude that the trail arose from a single event, rather than a period of cometary activity, in agreement with independent results3. The trail is made up of relatively large particles of millimetre to centimetre size that remain close to the parent asteroid. The shape of the trail can be explained by an initial impact ejecting large clumps of debris that disintegrated and dispersed almost immediately. We determine that this was an asteroid collision that occurred around 10 February 2009. © 2010 Macmillan Publishers Limited. All rights reserved.

Published
2010

49. Osiris—The optical, spectroscopic and infrared remote imaging system for the Rosetta Orbiter

Author

Thomas, N., Keller, H.U., Arijs, E., Barbieri, C., Grande, M., Lamy, P., Rickman, H., Rodrigo, R., Wenzel, K.-P., A'Hearn, M.F., Angrilli, F., Bailey, M., Barucci, M.A., Bertaux, J.-L., Brieβ, K., Burns, J.A., Cremonese, G., Curdt, W., Deceuninck, H., Emery, R., Festou, M., Fulle, M., Ip, W.-H., Jorda, L., Korth, A., Koschny, D., Kramm, J.-R., Kührt, E., Lara, L.M., Llebaria, A., Lopez-Moreno, J.J., Marzari, F., Moreau, D., Muller, C., Murray, C., Naletto, G., Nevejans, D., Ragazzoni, R., Sabau, L., Sanz, A., Sivan, J.-P., and Tondello, G.

Published
1998
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