Charting the New Frontier of the Cosmic Microwave Background Polarization
| Autor: | Bouchet, F.R., Benoit, A., Camus, Ph., Desert, F.X., Piat, M., Ponthieu, N. |
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| Přispěvatelé: | Lantz, Simone, F. Casoli, T. Contini, J.M. Hameury, L. Pagani, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), F. Casoli, T. Contini, J.M. Hameury, L. Pagani, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
[PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] Astrophysics (astro-ph) FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics |
| Zdroj: | Société Française d'Astronomie et d'Astrophysique Scientific Highlights 2005 Introduction To The Galaxy SF2A 2005 Introduction To The Galaxy SF2A 2005, Jun 2005, Strasbourg, France |
| Popis: | The anisotropies of the cosmic microwave background are a gold mine for cosmology and fundamental physics. ESA's Planck satellite should soon extract all information from the temperature vein but will be limited concerning the measurement of the degree of polarization of the anisotropies. This polarization information allows new independent tests of the standard cosmological paradigm, improves knowledge of cosmological parameters and last but not least is the best window available for constraining the physics of the very early universe, particularly the expected background of primordial gravitational waves. But exploiting this vein will be a challenge, since the sensitivity required is {\em at least} 10 times better than what Planck might achieve at best, with the necessary matching level of control of all systematics effects, both instrumental and astrophysical (foregrounds). We here recall the cosmological context and the case for CMB polarization studies. We also briefly introduce the SAMPAN project, a design study at CNES that aims at detecting the primoridal gravitational wave background for a tensor to scalar ratio T/S as small as 0.001. 4 pages, to appear in SF2A 2005 proceedings |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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