Fundamental physics with the ESA mission GAIA |
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| Affiliation: | 1. Medical Physics Department, Institut Català d’Oncologia, L’Hospitalet de Llobregat, Barcelona, Spain;2. Medical Physics Department, Veneto Institute of Oncology IOV‐IRCCS, Padua, Italy;3. Radiology and Nuclear Medicine, Amsterdam UMC, location VUMC, Amsterdam, The Netherlands;4. Department of Medical Physics and Radiation Protection, University Hospital Olomouc, Olomouc, Czech Republic;5. King’s College London and Guy’s and St Thomas’ PET Centre, School of Biomedical Engineering and Imaging Sciences, King’s College London, King’s Health Partners, London, UK;6. Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, Service de Médecine Nucléaire and LIB, INSERM U1146, Paris, France;7. Medical Image and Signal Processing, Ghent University, Belgium;8. University Hospital Maggiore della Carità, Novara, Italy;1. Centre For Medical Radiation Physics, University of Wollongong, Wollongong, Australia;2. Medical Physics Laboratory, University of Ioannina, Medical School, GR-45110 Ioannina, Greece;3. Division of Nuclear Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;5. INSERM, Université Paul Sabatier, UMR 1037, CRCT, Toulouse, France;6. Université Toulouse III-Paul Sabatier, UMR 1037, CRCT, Toulouse, France;7. Geant4 Associates International Ltd, Hebden Bridge, UK;8. Tomsk State University, Tomsk, Russia;9. CNRS, IN2P3, CENBG, UMR 5797, Gradignan, France;10. Université de Bordeaux, CENBG, UMR 5797, Gradignan, France;1. Faculty of Earth Science, Beni-Suef University, 62511, Egypt;2. Physics Department, Faculty of Science, Beni-Suef University, 62511, Egypt;3. Laboratoire de Physique et Chimie Théoriques, UMR 7019 – CNRS, Université de Lorraine, France;4. Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico;1. Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough, LE11 3TU, United Kingdom;2. CERFACS, CFD Team, 42 Av. Gaspard Coriolis, 31057, Toulouse, France;3. Rolls-Royce Deutschland Ltd & Co KG, 15827 Blankenfelde-Mahlow, Germany;1. Institut Technologique Européen des Métiers de la Musique – ITEMM, 71 Avenue O. Messiaen, 72000 Le Mans, France;2. Laboratoire d’Acoustique de l’Université du Mans, LAUM CNRS 6613, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex 09, France;3. Univ. Bourgogne Franche-Comté, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, 25000 Besançon, France |
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| Abstract: | esa advisory committees have selected the astrometry mission gaia as one of the future cornerstones of the science program. gaia is primarily a mission to study the history, formation and evolution of the Galaxy from astrometric, photometric and spectroscopic measurements, but it also displays remarkable capabilities in some areas of fundamental physics. After introducing briefly the measurement principles and the expected accuracy, I focus on the three topics most relevant for the physicists: the definition and realization of a quasi-inertial machian frame, the testing of the PPN formulation of the gravitational theory and finally a determination of the possible time change of the gravitational constant. |
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