CONSTRAINING THE DARK ENERGY EQUATION OF STATE WITH COSMIC VOIDS
Journal Article
·
· Astrophysical Journal (Online)
- Department of Physics and Astronomy, FPRD, Seoul National University, Seoul 151-747 (Korea, Republic of)
Our universe is observed to be accelerating due to the dominant dark energy with negative pressure. The dark energy equation of state (w) holds a key to understanding the ultimate fate of the universe. The cosmic voids behave like bubbles in the universe so that its shapes must be quite sensitive to the background cosmology. Assuming a flat universe and using the priors on the matter density parameter ({omega} {sub m}) and the dimensionless Hubble parameter (h), we demonstrate analytically that the ellipticity evolution of cosmic voids may be a sensitive probe of the dark energy equation of state. We also discuss the parameter degeneracy between w and {omega} {sub m}.
- OSTI ID:
- 21300762
- Journal Information:
- Astrophysical Journal (Online), Vol. 696, Issue 1; Other Information: DOI: 10.1088/0004-637X/696/1/L10; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-4357
- Country of Publication:
- United States
- Language:
- English
Similar Records
Constraining the time evolution of dark energy, curvature and neutrino properties with cosmic chronometers
Constraining Dark Energy with X-ray Galaxy Clusters, Supernovae and the Cosmic Microwave Background
Observational constraints on dark energy and cosmic curvature
Journal Article
·
Thu Dec 01 00:00:00 EST 2016
· Journal of Cosmology and Astroparticle Physics
·
OSTI ID:21300762
+4 more
Constraining Dark Energy with X-ray Galaxy Clusters, Supernovae and the Cosmic Microwave Background
Technical Report
·
Mon Apr 18 00:00:00 EDT 2005
·
OSTI ID:21300762
Observational constraints on dark energy and cosmic curvature
Journal Article
·
Thu Nov 15 00:00:00 EST 2007
· Physical Review. D, Particles Fields
·
OSTI ID:21300762