A5104993200- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Superconducting and THz Device Technology
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Stellar, planetary, and galactic studies
- Adaptive optics and wavefront sensing
- Astronomy and Astrophysical Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- History and Developments in Astronomy
- Pulsars and Gravitational Waves Research
- Nuclear physics research studies
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Geophysics and Gravity Measurements
- Advanced NMR Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Solar and Space Plasma Dynamics
- Physics of Superconductivity and Magnetism
- Atomic and Molecular Physics
- Nonlinear Photonic Systems
- Parallel Computing and Optimization Techniques
Centre National de la Recherche Scientifique
1991-2022
Université Paris Cité
1972-2022
Laboratoire AstroParticule et Cosmologie
2012-2022
Institut National de Physique Nucléaire et de Physique des Particules
2018-2019
Délégation Paris 7
2018
Collège de France
2002-2003
Laboratoire de Physique Théorique et Hautes Energies
1967-1991
Sorbonne Université
1976-1990
Laboratoire de Physique Théorique
1976
Laboratoire de Mathématiques d'Orsay
1969
In this paper we describe QUBIC, an experiment that will observe the polarized microwave sky with a novel approach, which combines sensitivity of state-of-the art bolometric detectors systematic effects control typical interferometers. QUBIC unique features are so-called "self-calibration", technique allows us to clean measured data from instrumental effects, and its spectral imaging power, i.e. ability separate signal in various sub-bands within each frequency band. two main bands: 150 GHz...
Current experiments aimed at measuring the polarization of Cosmic Microwave Background (CMB) use cryogenic detector arrays and cold optical systems to boost mapping speed sky survey. For these reasons, large volume systems, with windows, working continuously for years, are needed. Here we report on system QUBIC (Q U Bolometric Interferometer Cosmology) experiment: describe its design, fabrication, experimental optimization validation in Technological Demonstrator configuration. The is based...
view Abstract Citations (22) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Critical Look at Cosmions Kaplan, Jean ; Martin de Volnay, Francois Tao, Charling Turck-Chieze, Sylvaine thorough numerical investigation of the cosmion hypothesis as a solution to solar neutrino puzzle was performed using Saclay evolution code. The ensuing constraints on parameters appear domains in plane cosmion-proton cross section versus mass. Various hypotheses...
QUBIC (the Q and U Bolometric Interferometer for Cosmology) is a ground-based experiment which seeks to improve the current constraints on amplitude of primordial gravitational waves. It exploits unique technique, among Cosmic Microwave Background experiments, bolometric interferometry, combining together sensitivity detectors with control systematic effects typical interferometers. will perform sky observations in polarization, two frequency bands centered at 150 220 GHz, kilo-pixel focal...
A method which involves the use of $K$ mesons produced in both ${K}^{0}$ state and ${\overline{K}}^{0}$ is proposed to measure decay rates short-lived long-lived components neutral kaons. phenomeno-logical analysis these carried out leptonic case, a new test for $\mathrm{CPT}$ invariance suggested.
QUBIC, the QU Bolometric Interferometer for Cosmology, is a novel forthcoming instrument to measure B-mode polarization anisotropy of Cosmic Microwave Background. The detection signal will be extremely challenging; QUBIC has been designed address this with approach, namely bolometric interferometry. receiver cryostat exceptionally large and cools complex optical detector stages 40 K, 4 1 K 350 mK using two pulse tube coolers, <sup>4</sup>He sorption cooler double-stage...
Some sources of systematic errors, specific to polarized CMB measurements using bolometers, are examined. Although the evaluations we show have been made in context Planck mission (and more specifically HFI), many our conclusions valid for other experiments as well.
Remnant radiation from the early universe, known as Cosmic Microwave Background (CMB), has been redshifted and cooled, today a blackbody spectrum peaking at millimetre wavelengths. The QUBIC (Q&U Bolometric Interferometer for Cosmology) instrument is designed to map very faint polaristion structure in CMB. based on novel concept of bolometric interferometry conjunction with synthetic imaging. It will have large array input feedhorns, which creates number interferometric baselines. beam...