Dark Energy and the Accelerating Universe

By Joshua A. Frieman, M. Turner, D. Huterer. 2008

1,699 citations recorded by the source corpus.

Ten years ago, the discovery that the expansion of the universe is accelerating put in place the last major building block of the present cosmological model, in which the universe is composed of 4% baryons, 20% dark matter, and 76% dark energy. At the same time, it posed one of the most profound mysteries in all of science, with deep connections to both astrophysics and particle physics. Cosmic acceleration could arise from the repulsive gravity of dark energy—for example, the quantum energy of the vacuum—or it may signal that general relativity (GR) breaks down on cosmological scales and must be replaced. We review the present observational evidence for cosmic acceleration and what it has revealed about dark energy, discuss the various theoretical ideas that have been proposed to explain acceleration, and describe the key observational probes that will shed light on this enigma in the coming years.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/f21af21941673e5531872e292437d1f7d460d111

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Citations in the corpus

Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions (2011, background): “But it could also indicate that the effect attributed to dark energy is rather due to a breakdown of general relativity (GR) on the largest scales [158].”
Holographic dark energy (2016, background): “Although favored by the observations, the ΛCDM model suffers from two cosmological constant problems [12, 13, 14, 15, 16, 17, 18, 19, 20].”
SUPERNOVA SIMULATIONS AND STRATEGIES FOR THE DARK ENERGY SURVEY (2011, background): “A previously unknown energy-density component known as dark energy is the most common explanation for cosmic acceleration (for a review, see Frieman et al. 2008a; Weinberg et al. 2012).”
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION (2010, background): “…high-z Type Ia supernovae have been the most powerful data for first discovering the existence of dark energy (Riess et al. 1998; Perlmutter et al. 1999) and then constraining the properties of dark energy, such as the equation of state parameter, w (see Frieman et al. 2008, for a recent review).”
CHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS (2008, background): “…the systematic error budget for a particular measurement, so we report on only those dominant sources. e largest known source of systematic error in the SN Ia analysis is the correction for extinction in host galaxies and uncertainties in intrinsic colors of SN Ia (e.g., Frieman et al. 2008).”
FIRST-YEAR SLOAN DIGITAL SKY SURVEY-II SUPERNOVA RESULTS: HUBBLE DIAGRAM AND COSMOLOGICAL PARAMETERS (2009, methodology): “Simulation of Survey Search Efficiency The final step in the simulation is to model losses related to the SN search.”
THE CARNEGIE SUPERNOVA PROJECT: LIGHT-CURVE FITTING WITH SNooPy (2010, background): “We also observed events from other surveys including the SDSS-II Supernova Survey (Frieman et al. 2008), the Catalina Sky Survey (Drake et al. 2009), the CHilean Automatic Supernova sEarch (Pignata et al. 2009, CHASE), as well as from many amateur observers3.”
The clustering of galaxies in the SDSS‐III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large‐scale two‐point correlation function (2012, background): “However, a large variety of alternative models have been proposed, which predict different values of wDE and its possible evolution with time (for a review see e.g. Peebles & Ratra 2003; Frieman et al. 2008; Gott & Slepian 2011).”
Observational probes of cosmic acceleration (2012, methodology): “To mention just a selection of these, we note that Frieman et al. (2008) and Blanchard (2010) provide excellent overviews of the field, covering theory, current observations, and future experiments, while Astier and Pain (2012) cover the observational approaches concisely; Peebles and Ratra (2003)…”