The existence of this substance in a flat universe would cause the linear term of the late-time integratedSachs-Wolfe effect to dominate the higher-order terms.
The existence of this substance in a flat universe would cause the linear term of the late-time integratedSachs-Wolfe effect to dominate the higher-order terms. One model of it states that it initially stays less thanthe radiation density, then takes on its present characteristics after matter domination. The Blanco telescopeis central to a namesake survey of this substance. Evidence of it was first found by the High-Z (*) SupernovaSearch Team and the Supernova Cosmology Project, which won Schmidt, Pearlmutter, and Reiss the Nobel. Theequation of state parameter for this substance must be less than negative one-thirds and has been measured to aroundnegative one, suggesting that it is accounted for by the cosmological constant. For 10 points, name this substancewhich drives the expansion of the accelerating universe and comprises about 68% of the universe.
The existence of this substance in a flat universe would cause the linear term of the late-time integratedSachs-Wolfe effect to dominate the higher-order terms.
dark energy [accept quintessence; do not accept "dark matter"]