Constraining dark energy with SNe Ia and large-scale structure

Preprint
Publisher Website
Google Scholar
Abstract
Measurements of the distances to SNe Ia have produced strong evidence that the expansion of the Universe is accelerating, implying the existence of a nearly uniform component of dark energy with negative pressure. We show that constraints to this mysterious component based upon large-scale structure nicely complement the SN Ia data, and that together they require Omega_X = (0.6,0.7) and w_X < -0.6 (95% cl), for the favored flat Universe. Other cosmological data support this conclusion. The simplest explanation, a cosmological constant, is consistent with this, while some of the other possibilities are not.

This publication has 0 references indexed in Scilit: