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Programme Scientifique Table Des Matières 1 Programme scientifique Lundi 14 Juin Mardi 15 Juin Mercredi 16 Juin Jeudi 17 Juin Vendredi 18 Juin Astro fondamentale (Géodésie spatiale, PCMI (Physique et Journée Commune Journée Commune mécanique céleste, et ASHRA+PNPS Chimie du Milieu SF2A SF2A systèmes de Amphi B3 Interstellaire) Amphi A1 Amphi A1 réference) Amphi B3 Amphi A3 (mat) PCHE (Phénomènes PCHE (Phénomènes PNP (Planètes) Cosmiques de Haute Cosmiques de Haute Amph A1 Energie) Energie) Amphi A1 Amphi A1 PNST (Soleil-Terre) PNG (Galaxies) PNG (Galaxies) Amphi A2 (mat), Amphi A2 Amphi A2 A3 (a-m) ASHRA (Haute Résolution PNC (Cosmologie) PNC (Cosmologie) Angulaire) Amphi A3 Amphi A3 Amphi B3 PNPS (Physique Stellaire) Amphi A2 Table des matières Programme « Astronomie Fondamentale » . 2 Programme PNP . 4 Programme PNST . 5 Programme ASHRA . 7 Programme PNPS . 9 Session Plénière du 15 Juin . 11 Session Plénière du 16 Juin . 12 Programme PCHE . 13 Programme PNG . 15 Programme PNC . 17 Programme PCMI . 20 Sélection de restaurants aux alentours de Jussieu 21 Abstracts 25 Sessions plénières . 25 Session Astronomie Fondamentale . 28 Session ASHRA . 32 Session PCHE . 39 Session PCMI . 51 Session PNC . 61 Session PNG . 70 Session PNP . 81 Session PNPS . 93 Session PNST . 107 Programme « Astronomie Fondamentale » 2 Programme « Astronomie Fondamentale » L’astronomie fondamentale occupe une place singulière mais très importante dans la communauté A&A. Elle est en effet située, pour les uns, à la frontière de l’astronomie et de la géophysique, à la frontière de l’astronomie et de la planétologie pour les autres. Les méthodes qu’elle fait utiliser, cependant, sont spécifiques, continuent et continueront d’apporter des résultats très importants pour la discipline, ainsi que pour les thématiques qui lui sont sous-jacentes : mécanique céleste, mécanique spatiale, planétologie, systèmes de référence spatio-temporels, géodynamique, cinématique terrestre, temps- fréquence, notamment. Le «fil rouge» de cette année est le projet GALILEO. Même si les présentations retenues ne sont pas toutes nécessairement reliées de très près à ce projet, il est l’occasion, à quelques années seulement de sa mise en service opérationnelle, d’afficher le rôle central et fédérateur qu’il occupe en astronomie fondamentale. Organisateurs : Florent Deleflie, Pierre Exertier Lundi 14 Juin 2004 (matin 9h-13h) Exposé introductif Nicole Capitaine Développements récents des concepts et modèles en astronomie 9 :00-9 :25 (SYRTE) fondamentale Session 1. Rotation de la Terre Patrick Charlot (Obs. Densification of the International Celestial Reference Frame in the 9 :30-9 :45 Bordeaux) Northern Hemisphere. Géraldine Bourda 9 :50-10 :05 Earth orientation and temporal variations of the gravity field. (SYRTE) Rotation of the Earth, Mars and asteroïds : comparative study of Jean Souchay (SYRTE) 10 :10-10 :25 models and data quality. Session 2. Systèmes de Référence et Physique Fondamentale David Coulot Combination of space geodesy techniques for monitoring the kine- 10 :30-10 :45 (GEMINI/LAREG) matics of the Earth. PAUSE avec démonstration interactive : Interactive Earth rotation 10 :50-11 :10 through the Web par Christian Bizouard (SYRTE) Christophe General post-Minkowskian expansions of Synge’s world function, 11 :10-11 :25 LePoncin-Laffite time transfer and gravitational deflection of light ray. Applications (SYRTE) to GAIA and GALILEO. Philippe Merck TWSTFT technique at BNM-SYRTE : a potential alternative to 11 :30-11 :45 (BNM-SYRTE) GPS for time and frequency transfer. Construction of a primary and autonomous relativistic positioning Bartolomé Coll (SYRTE) 11 :50-12 :05 system with GALILEO : SYPOR project. Session 3. Mécanique céleste et spatiale Florent Deleflie Resonance effects in the GPS and GALILEO constellations : com- 12 :10-12 :25 (GEMINI/FUNDP) parisons over 2 centuries. Alain Vienne 12 :30-12 :45 Mutual events in the jovian and saturnian systems. (IMCCE/LAL) Nicolas Rambaux (Obs. 12 :50-13 :05 Mercury’s spin-orbit model and its physical libration. Bordeaux/ORB) Programme « Astronomie Fondamentale » 3 Session POSTER Christophe Influence of the multipole moments of a giant planet on the propa- LePoncin-Laffite gation of light (SYRTE) Julio Ignacio Bueno de Near-Infrared astrometry and photometry of Southern ICRF qua- Camargo (Obs. Bordeaux) sars. Valéry Lainey Io’s secular acceleration vs. observations accuracy (IMCCE/ORB) Programme PNP 4 Programme PNP Cette année, "Mars" a été choisi comme thème de la journée PNP. Organisateurs : François Forget , Nicolas Mangold, Daniele Pinti Lundi 14 Juin 2004 SESSION 1 : "Les glaces de Mars" J.P. Bibring et l’équipe 09 :00-09 :20 Les calottes Martiennes vues par OMEGA (Mars Express) Omega 09 :20-09 :35 B. Schmitt et S. Doute Glaces polaires et condensations saisonnières sur Mars Les glaces observées par le Gamma Ray Spectrometer de Mars 09 :35-09 :55 S. Maurice Odyssey Modèles climatiques et variations d’obliquité : des glaciers sur 09 :55-10 :15 B. Levrard Mars Observation des calottes et du sous-sol de Mars par le radar MAR- 10 :15-10 :30 W. Kofman SIS (Mars Express) SESSION 2 : "L’air de Mars" 11 :00-11 :10 J.L. Bertaux Présentation générale de SPICAM sur Mars Express L’atmosphère de Mars observée par occultation d’étoiles avec SPI- 11 :10-11 :20 E. Quemerais CAM 11 :20-11 :30 S. Perrier Mesures de l’ozone dans l’ultra-violet avec SPICAM Observation de l’atmosphère martienne par Omega sur Mars Ex- 11 :30-11 :42 P. Drossart press 11 :42-11 :53 E. Lellouch Vapeur d’eau et CO observées par PFS sur Mars Express Détections d’espèces mineures dans l’atmosphère martienne par 11 :53-12 :04 T. Encrenaz spectroscopie depuis la Terre et avec Mars Express Détection du Methane dans l’atymosphère martienne par le spec- 12 :04-12 :15 J.P. Maillard tromètre FTS du télescope CFHT 12 :15-12 :30 F. Lefevre et S. Lebonnois Modèles chimie-transport de l’atmosphère martienne DÉJEUNER SESSION 3 : "Des lacs sur Mars ?" 14 :00-14 :25 Equipe Omega La minéralogie des sédiments martiens vue par OMEGA 14 :25-14 :55 L. D’Uston Le site de Terra Meridiani vu par "Opportunity" 14 :55-15 :10 V. Ansan Morphologies des vallées anciennes sur Mars 15 :10-15 :25 C. Quantin Rivières et lacs dans Valles Marineris 15 :25-15 :35 F. Forget Modélisation du climat ancien SESSION 4 : "Les roches de Mars" 16 :00-16 :15 P. Pinet Propriété des surfaces vues par la caméra HRSC sur Mars Express Application de l’imagerie sur Mars Express à l’étude des glisse- 16 :15-16 :30 D. Baratoux ment de terrain. La composition du sol vue par le Gamma Ray Spectrometer (Mars 16 :30-16 :50 O. Gasnault Odyssey) 16 :50-17 :10 P. Rochette et V. Chevrier Altération et magnétisme de la surface de Mars 17 :10-17 :40 A. Jambon Géochimie des météorites martiennes Programme PNST 5 Programme PNST La journée PNST comporte 2 sessions d’une demi-journée chacune : une session commune avec le PNPS et une session dédiée aux plasmas solaires et magnétosphériques. Organisateurs : Dominique Fontaine , pour la physique magnétosphérique, Ludwig Klein, pour la physique solaire, avec Marie-Jo Goupil et Claude Catala pour la sessions commune avec le PNPS Le temps indiqué pour les contributions orales comprend les questions. Les exposés invités sont suivis de la lettre "I" . Voir (*) pour la liste des posters. Lundi 14 Juin 2004 Session Commune PNPS+PNST : le magnétisme solaire et stellaire 09 :00-09 :25 P. Petit Dynamo processes and differential rotation in solar-type stars 09 :25-09 :40 A.S. Brun Stellar magnetic activity and dynamo effect Convection/rotation interaction in young solar-like stars : 3-D hy- 09 :40-09 :55 J. Ballot drodynamic simulations 09 :55-10 :20 C. Briand What’s new about intergranular magnetic field Origine des champs magnetiques des etoiles chaudes : modeles et F. Lignieres 10 :20-10 :45 questions en suspens PAUSE Structure and dynamics of the solar corona : the peculiar role of the R. Grappin, G. Aulanier 11 :00-11 :25 photosphere 11 :25-11 :40 J. Bouvier Star-disc magnetospheric interaction in T Tauri stars 11 :40-11 :55 I. Zouganelis Solar wind acceleration : relevance of kinetic collisionless models Interactions between shock waves, turbulence and magnetic field 11 :55-12 :10 M. Chadid in the atmospheres of post-main sequence stars. The X-ray emission from Young Stellar Objects in the rho Ophiu- 12 :10-12 :25 H. Ozawa chi dark cloud as seen by XMM-Newton 12 :25-12 :40 J.F. Donati ESPADONs : the new generation stellar spectropolarimeter" DEJEUNER Session PNST : environnements ionisés solaire et terrestre Session 1. Observations récentes 14 :00-14 :25 G. Trottet (I) First observations of solar flares at sub-millimeter wavelengths 14 :25-14 :40 E. Pariat Flux tube emergence, from photosphere to chromosphere 14 :40-14 :55 A. Roux Stability of the geomagnetic tail : Cluster observations Themis observations : longitudinal and transverse magnetic field 14 :55-15 :10 V. Bommier map under a filament 15 :10-15 :25 A. Lopez Magnetic maps of solar prominences Multi-point observations of plasma waves with the instrument 15 :25-15 :50 P. Canu (I) Whisper of Cluster Session POSTERS (voir 15 :50 - 16 :40 présence des auteurs + Pause café *) Programme PNST 6 Session 2. Méthodes numériques 16 :40-16 :55 E. Buchlin Statistical simulations of simplified MHD Numerical simulation of turbulence and acceleration in the magne- 16 :55-17 :20 F. Mottez (I) tospheric auroral zone Alfven wave instabilities : magnetosheath Cluster observations and 17 :20-17 :35 O. Alexandrova hybrid simulations Ionosphere models : numerical methods and coupling problems in PL. Blelly (I) 17 :35-18 :00 the system atmosphere-ionosphere-magnetosphere * POSTERS Second solar spectrum observed at the Pic-du-Midi : depth probing V. Bommier of the turbulent magnetic field intensity in a quiet region Particle acceleration in a solar active region modelled by a cellular C.
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