The Zero-Acceleration Surface Around the Local Group of Galaxies

Details The Zero-Acceleration Surface Around the Local Group of Galaxies The Zero-Acceleration Surface Around the Local Group of Galaxies

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003arep...47..728d&link_type=abstract

Astronomy Reports, vol. 47, Issue 9, p.728-732

Astronomy and Astrophysics

Astronomy

9

Scientific paper

Recent observational data on the density of the cosmic vacuum are used to obtain an exact solution for the zero-acceleration surface around the Local Group of galaxies. This surface separates the inner region, in which the gravitation of the galaxies dominates, from the outer region, in which the antigravitation of the cosmic vacuum dominates. The zero-acceleration surface is close to a sphere of radius ⋍2 Mpc. The size and shape of the surface have remained nearly constant during the lifetime of the Local Group as a distinct system of galaxies.

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