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Frontiers of Fundamental Physics 14
Cosmological results from Planck and LSS François Bouchet (5300) - Mercredi 16 juillet 2014 09:30 - 10:00

Cosmological results from Planck and LSS François Bouchet

Sketched out in 1992, selected by ESA in 1996, launched in 2009, Planck delivered on March 21st its first full sky maps of the millimetric emission at 9 frequencies, as well as those which follow from them, and in particular Planck map of the anisotropies of the Cosmic Microwave Background (CMB). The later displays minuscule variations as a function of the observing direction of the temperature of the fossile radiation around its mean temperature of 2.725K. I will briefly describe how these high resolution maps with a precision of a few parts in a million have been obtained, from collection to analysis of the first 500 billion samples of our HFI instrument.
CMB anisotropies reveal the imprint of the primordial fluctuations which initiate the growth of the large scale structures of the Universe, as transformed by their evolution, in particular during the first 370 000 years, i.e. till the Universe became transparent and the forming of the image we record today. The statistical characteristics of these anisotropies allow constraining jointly the physics of the creation of the primordial fluctuations and that of their evolution. They teach us the possible value of the parameters of the models which we confront to data. I will describe Planck estimates of the density of the constituents of the Universe (usual matter, cold dark matter or CDM, dark energy...), and their implication in terms of derived quantities like the expansion rate or the spatial curvature. I will review what we learnt on the generation of the fluctuation, and wil discuss extensions of the standard cosmological model, so called "Lambda-CDM", both in term of non minimal physical models – multi-field inflation for instance, or additional constituents - like cosmic strings or a fourth neutrino.
Finally, it will briefly describe other promising results on the matter distribution which is travelled through by the CMB image on its long 13.7 billion years trip towards us. I will mention in particular what we can learn on the dark matter distribution - which is detected through its distorting effet of the CMB image by gravitationnal lensing, or that of hot gaz, which is revealed by the spectral distortion it induces.

François Bouchet (IAP) Chairman: Gabriele Veneziano

Physique

Toutes les vidéos de l'évenement Frontiers of Fundamental Physics 14 (22 videos)

00:02:37.05

2014-07-15

08:45 - 09:00 : Opening Roland Triay

00:49:06.23

2014-07-15

09:00 - 09:30 : Personal reflections on two success stories Gabriele Veneziano

00:41:05.86

2014-07-15

09:30 - 10:00 : Status of HEP after the LHC Run 1 Paraskevas Sphicas

00:41:10.71

2014-07-15

10:00 - 10:30 : Discovering dark matter Subir Sarkar

00:31:23.26

2014-07-15

11:00 - 11:30 : LSS with angular cross-correlations: Combining Spectroscopic and ...

00:31:09.70

2014-07-15

11:30 - 12:00 : Dynamics of the Cosmic Web Adi Nusser

00:31:36.22

2014-07-15

12:00 - 12:30 : Distances to supernovae: an efficient probe of dark energy Pierre...

00:59:32.21

2014-07-16

09:30 - 10:00 : Cosmological results from Planck and LSS François Bouchet

00:48:21.51

2014-07-16

10:00 - 10:30 : Status of the BSM scenarios Stefan Pokorski

00:31:42.00

2014-07-16

11:00 - 11:30 : Neutrino pathways to cosmology Jose W.F Valle

00:32:27.11

2014-07-16

11:30 - 12:00 : The top-quark gateway to new physics Fabio Maltoni

00:34:02.22

2014-07-16

12:00 - 12:30 : IceCube and the Discovery of High-Energy Cosmic Neutrinos Francis...

00:38:38.66

2014-07-17

09:00 - 09:30 : Loop Quantum Gravity Carlo Rovelli

00:30:10.40

2014-07-17

09:30 - 10:00 : Investigating inflation and super-high-energy physics with new CM...

00:26:24.57

2014-07-17

10:00 - 10:30 : Origin of Cosmic Rays Vladimir Ptuskin

00:46:20.98

2014-07-17

11:00 - 11:45 : Background independence of GR and in LQG Jerzy Lewandowski

00:44:35.60

2014-07-17

11:45 - 12:30 : High precision gravitational self-force calculations and post-New...

00:35:24.97

2014-07-18

09:00 - 09:30 : Co-development of conceptual understanding and critical attitude:...

00:43:58.29

2014-07-18

10:00 - 10:30 : Current Issues in Galaxy Formation Theory 2014 Joe Silk

00:30:40.09

2014-07-18

11:00 - 11:30 : Dark Energy and Modified Gravity Philippe Brax

00:30:52.59

2014-07-18

11:30 - 12:00 : From DGT to dRGT: a review of "massive gravity" theorie...

00:28:14.77

2014-07-18

12:00 - 12:30 : Cosmological tests of gravity Kazuya Koyama

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