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- Title
On Gravitational Repulsion.
- Authors
Piran, Tsvi
- Abstract
The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations—small dimples in the primordial density field—that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and grow to become voids in the galaxy distribution. These voids—regions with a diameter of 40 h-1 Mpc which are almost devoid of galaxies—are the largest objects in the Universe.
- Publication
General Relativity & Gravitation, 1997, Vol 29, Issue 11, p1363
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1023/A:1018877928270