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Frontiers of Fundamental Physics 14
Distances to supernovae: an efficient probe of dark energy Pierre Astier (5310) - Mardi 15 juillet 2014 12:00 - 12:30

Distances to supernovae: an efficient probe of dark energy Pierre Astier

The visible universe

Measuring distances to supernovae (or more precisely to the “type Ia” subclass) has allowed us to measure the distance-redshift relation beyond linear order for the first time in 1998. These first results already showed strong evidence for an accelerated cosmological expansion at the present epoch. This has been confirmed by several other cosmological probes, but what causes this accelerated expansion remains elusive. Our ignorance is commonly parametrized using the “equation of state of dark energy”, where dark energy refers to the fluid one can postulate to source the acceleration. I will present how supernova measurements have evolved since the discovery, review the latest dark energy constraints, and discuss the future of the probe.

Pierre Astier (LPNHE) Chairman: François Bouchet

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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