The radius, at which a galaxy group stops the Hubble stream, and the group mass: an exact analytical solution

Abstract

The gravitational field of a galaxy group or cluster slows down the Hubble stream and turns it speed to zero at some radius $R_0$. We offer an exact analytical relation between $R_0$ and the mass of the group.

4 pages, 2 figures, accepted to MNRAS Letters

References in corpus (3)

• The Hubble flow around the Local Group
• A dynamical model of the local cosmic expansion
• The central cusps in dark matter halos: fact or fiction?

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