文档介绍：. Space Sci., Vol. 43, Nos. lO/ll, pp. 1449-1457, 1995
Pergamou Elsevier Science Ltd
Printed in Great Britain
0032-0633(95)00042-9
Large angular scale anisotropy of the CBR : COBE DMR observations
e F. Smoot
Lawrence Berkeley Laboratory, Space Sciences Laboratory, Center for Particle Astrophysics, and Department of Physics,
University of California, Berkeley, CA 94720, .
Received 14 November 1994; revised and accepted 15 February 1995
are more dense than average attract the material around
Abstr,ae#. Observations of the Cosmic Microwave them, which in turn attracts more material and so on until
~ack~~~~~~~~~ti~~ (CMBR) have put the standard the over-density es non-linear and a stable structure
msde;lofcos~~lag,:zhe Big 3ang, cm firm foating and forms. Slightly less dense regions would lose material to
provide tests of xkrious ideaS of farge,scale slructure the more dense medium surrounding them. The less dense
formation aad the o@$n of ,the &verse1 Ground- regions would then evolve to voids.
based rne~~r~~~~~~ oE the cosmic, b,ackground~ radi- Observations of large scale structure led Edward Har-
ation are’hampere&by emission from .atmospheric O2 rison (1970) and Yakov Zeldovich (1972) to speculate
and IX@ molecules~ This has forced precision exper- that a scale-invariant spectrum of primordial density per-
iments t6 high d~tudes and balloon-