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http://hdl.handle.net/20.500.12386/26345
Title: | The Gaia mission: the dawn of Astrometric Cosmology? Status and prospects after 14 months of science operations | Authors: | SPAGNA, Alessandro CROSTA, Mariateresa LATTANZI, Mario Gilberto RE FIORENTIN, Paola |
Issue Date: | 2016 | Journal: | JOURNAL OF PHYSICS. CONFERENCE SERIES | Volume: | XIV International Conference on Topics in Astroparticle and Underground Physics (TAUP 2015) | Number: | 718 | Issue: | 3 | First Page: | 032005 | Abstract: | The concept of precisely gauging a gravity-dominated Universe like ours through the individual observations of its fundamental constituents, the stars, immediately calls astrometry, the oldest quantitative specialty of astronomy, into play. Today, thanks to the launch of the Gaia satellite, astrometry has reached such levels to become a key player in the field of local cosmology and experimental gravitation. Updates on the status of the mission, orbiting in L2 since January 2014 and in nominal observation mode since July 2014, are presented. We also discuss how the astrometric observations from within the gravitational fields of the Solar System can uniquely probe possible deviations from General Relativity and how accurate absolute kinematics at the scale of the Milky Way can, for the first time in situ, account for the predictions of the CDM model for the formation of the Galactic halo. | Conference Name: | XIV International Conference on Topics in Astroparticle and Underground Physics (TAUP 2015) | Conference Place: | Torino, Italy | Conference Date: | 7-11 September, 2015 | URI: | http://hdl.handle.net/20.500.12386/26345 | URL: | https://iopscience.iop.org/article/10.1088/1742-6596/718/3/032005 http://taup2015.to.infn.it/ |
ISSN: | 1742-6588 | DOI: | 10.1088/1742-6596/718/3/032005 | Bibcode ADS: | 2016JPhCS.718c2005S | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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File | Description | Size | Format | |
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Spagna_2016_J._Phys. _Conf._Ser._718_032005.pdf | Pdf editoriale | 1.34 MB | Adobe PDF | View/Open |
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