Absence of "Ghost Images" Excludes Large Values of the Cosmological Constant

Abstract

We used the 1.4 GHz NRAO NVSS survey to search for ghost images of radio sources, expected in cosmologies with a positive cosmological constant and positive space curvature. No statistically significant evidence for ghost images was found, placing constraints on the values of L, the space curvature or the duration of the radio-luminous phase of extragalactic radio sources.

11 pages 2 figures

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Cited by in corpus (4)

• Astrophysical Implications of Higher-Dimensional Gravity
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• Classical and quantized aspects of dynamics in five dimensional relativity
• On Higher-Dimensional Dynamics