
VOLUME 57 (1993)  ISSUE 10 
PAGE 606

New restrictions on spatial topology of the universe from microwave background temperature fluctuations
Starobinsky A. A.
If the Universe has the topology of a 3torus (Γ^{3}), then it follows from recent data on the largescale temperature fluctuations, Δ7ΥΓ, of the cosmic microwave background that either the minimal size of the torus is at least on the order of the present cosmological horizon or the largescale Δ TV Γ pattern should have a symmetry plane (in the case of the effective Γ^{1} topology), or a symmetry axis (in the case of the effective Γ^{2} topology). The latter possibility can probably be ruled out by the data.

