[Lʼaccélération de lʼexpansion de lʼUnivers du point de vue de lʼobservation]
La découverte de lʼaccélération cosmique est lʼun des développements les plus importants de la cosmologie moderne. Lʼobservation, il y a 13 ans, que les supernovae de type Ia étaient moins lumineuses quʼattendu pour un univers en phase de décélération, et une série dʼobservations indépendantes mettant en jeu des galaxies, des amas de galaxies et le rayonnement de fond cosmique, pointent toutes dans la même direction : nous semblons être dans un univers spatialement plat qui subit une phase dʼaccélération de son expansion. Dans cet article, nous passons en revue les différentes observations, la plupart obtenues au cours des 10 dernières années, et les améliorations quʼapporteront les projets actuellement en phase de prise de données ou encore en préparation.
The discovery of cosmic acceleration is one of the most important developments in modern cosmology. The observation, thirteen years ago, that type Ia supernovae appear dimmer that they would have been in a decelerating universe followed by a series of independent observations involving galaxies and cluster of galaxies as well as the cosmic microwave background, all point in the same direction: we seem to be living in a flat universe whose expansion is currently undergoing an acceleration phase. In this article, we review the various observational evidences, most of them gathered in the last decade, and the improvements expected from projects currently collecting data or in preparation.
Mots-clés : Cosmologie moderne, Supernovae de type Ia, Oscillations baryoniques, Lentilles gravitationnelles, Amas de galaxies, Energie noire
Pierre Astier 1 ; Reynald Pain 1
@article{CRPHYS_2012__13_6-7_521_0, author = {Pierre Astier and Reynald Pain}, title = {Observational evidence of the accelerated expansion of the universe}, journal = {Comptes Rendus. Physique}, pages = {521--538}, publisher = {Elsevier}, volume = {13}, number = {6-7}, year = {2012}, doi = {10.1016/j.crhy.2012.04.009}, language = {en}, }
Pierre Astier; Reynald Pain. Observational evidence of the accelerated expansion of the universe. Comptes Rendus. Physique, Understanding the Dark Universe, Volume 13 (2012) no. 6-7, pp. 521-538. doi : 10.1016/j.crhy.2012.04.009. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2012.04.009/
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- The SuperCOSMOS all-sky galaxy catalogue, Monthly Notices of the Royal Astronomical Society, Volume 462 (2016) no. 2, p. 2085 | DOI:10.1093/mnras/stw1818
- Regular black holes inf(R)gravity coupled to nonlinear electrodynamics, Physical Review D, Volume 94 (2016) no. 2 | DOI:10.1103/physrevd.94.024062
- General Relativity and Cosmology: Unsolved Questions and Future Directions, Universe, Volume 2 (2016) no. 4, p. 23 | DOI:10.3390/universe2040023
- Gravitational anomalies in the solar system?, International Journal of Modern Physics D, Volume 24 (2015) no. 06, p. 1530015 | DOI:10.1142/s0218271815300153
- Distinguishing modified gravity models, Journal of Cosmology and Astroparticle Physics, Volume 2015 (2015) no. 10, p. 042 | DOI:10.1088/1475-7516/2015/10/042
- Ray-tracing simulations of coupled dark energy models, Monthly Notices of the Royal Astronomical Society, Volume 447 (2015) no. 1, p. 858 | DOI:10.1093/mnras/stu2513
- Testing a dissipative kinetic k-essence model, The European Physical Journal C, Volume 75 (2015) no. 4 | DOI:10.1140/epjc/s10052-015-3366-0
- Diameter Angular Distance in Locally Inhomogeneous Models, Accelerated Cosmic Expansion, Volume 38 (2014), p. 75 | DOI:10.1007/978-3-319-02063-1_6
- Material models of dark energy, Annalen der Physik, Volume 526 (2014) no. 7-8, p. 318 | DOI:10.1002/andp.201400052
- Environmental variation of constants in screened modified theories of gravity, Physical Review D, Volume 90 (2014) no. 2 | DOI:10.1103/physrevd.90.023505
- Structure formation in multiple dark matter cosmologies with long-range scalar interactions, Monthly Notices of the Royal Astronomical Society, Volume 428 (2013) no. 3, p. 2074 | DOI:10.1093/mnras/sts169
- Probing strongly coupled chameleons with slow neutrons, Physical Review D, Volume 88 (2013) no. 8 | DOI:10.1103/physrevd.88.083004
- Constraints on dark energy from the Lyα forest baryon acoustic oscillations measurement of the redshift 2.3 Hubble parameter, Physics Letters B, Volume 723 (2013) no. 1-3, p. 1 | DOI:10.1016/j.physletb.2013.04.044
- Observational probes of cosmic acceleration, Physics Reports, Volume 530 (2013) no. 2, p. 87 | DOI:10.1016/j.physrep.2013.05.001
- The phenomenological approach to modeling the dark energy, Comptes Rendus. Physique, Volume 13 (2012) no. 6-7, p. 539 | DOI:10.1016/j.crhy.2012.04.007
- Everything you always wanted to know about the cosmological constant problem (but were afraid to ask), Comptes Rendus. Physique, Volume 13 (2012) no. 6-7, p. 566 | DOI:10.1016/j.crhy.2012.04.008
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