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Constraining dark energy with SNe Ia and large-scale structure

Saul Perlmutter·Michael S. Turner·Martin White
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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.

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Saul Perlmutter, Michael S. Turner, Martin White. 1999-01-15. Constraining dark energy with SNe Ia and large-scale structure. https://doi.org/10.1103/physrevlett.83.670

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