Work

WMAP constraints on low redshift evolution of dark energy

Year: 2005

Type: article

Abstract: The conceptual difficulties associated with a cosmological constant have led to the investigation of alternative models in which the equation of state parameter, w=p/ρ, of the dark energy evolves with time. We show that combining the supernova type Ia observations with the constraints from WMAP observations restricts large variation of ρ(z) at low redshifts. The combination of these two observational constraints is stronger than either one. The results are completely consistent with the cosmological constant as the source of dark energy.

Source: Monthly Notices of the Royal Astronomical Society Letters

DOI: 10.1111/j.1745-3933.2005.08577.x

Authors: H. K. Jassal, J. S. Bagla, T. Padmanabhan

Institutions: Harish-Chandra Research Institute, Inter-University Centre for Astronomy and Astrophysics

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Harish-Chandra Research Institute

OpenAlex ID: W1801676272

FWCI: 20.55

Cites: 94

Cited by: 444

Related to: 10