Constraining Dark Energy through the Stability of Cosmic Structures

Abstract

For a general dark-energy equation of state, we estimate the maximum possible radius of massive structures that are not destabilized by the acceleration of the cosmological expansion. A comparison with known stable structures constrains the equation of state. The robustness of the constraint can be enhanced through the accumulation of additional astrophysical data and a better understanding of the dynamics of bound cosmic structures.

11 pages, 1 figure

References in corpus (3)

• The M31 Velocity Vector. II. Radial Orbit Towards the Milky Way and Implied Local Group Mass
• Eridanus - A Supergroup in the Local Universe?
• Dark energy and key physical parameters of clusters of galaxies

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