%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@dissemination WEBSCI; PORTALCAPES; COMPENDEX.
%@nexthigherunit 8JMKD3MGPCW/3EU29DP
%@archivingpolicy denypublisher denyfinaldraft24
%3 1-s2.0-092056329500495U-main.pdf
%X The cosmic microwave background (CMB) is a unique probe of cosmological parameters and conditions. There is a connection between anisotropy in the CMB and the topology of the Universe. Adopting a universe with the topology of a 3-Torus, or a universe where only harmonics of the fundamental mode are allowed, and using 2-years of COBE/DMR data, we obtain constraints on the topology of the Universe. We obtain more accurate results than previous work by using all multipole moments, avoiding approximations by computing their full covariance matrix. The best fit for a cubic toroidal universe is obtained at a scale of 7200h^−1Mpc for n = 1. The data set a lower limit on the cell size of 4320h^−1Mpc at 95% confidence and 5880h^−1Mpc at 68% confidence. These results show that the most probable cell size would be around 1.2 times larger than the horizon scale, implying that the 3-Torus topology is no longer an interesting cosmological model.
%N 1-3
%@secondarydate 19960408
%T Does COBE rule out a toroidal universe?
%K cosmic microwave background (CMB),topology of the Universe, COBE/DMR data.
%@secondarytype PRE PI
%@usergroup administrator
%@usergroup jefferson
%@group DGE-INPE-MCT-BR
%@secondarykey INPE-5920-PRE/2062
%@copyholder SID/SCD
%F 7285
%@issn 0920-5632
%2 sid.inpe.br/iris@1905/2005/07.29.03.11.25
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Lawrence Berkeley Laboratory, Space Sciences Laboratory and Center for Particle Astrophysics, University of California, Berkeley CA, USA
%@project CNPq [process No.201330/93-8(NV)]; Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under contract No.DE-AC03-76SF00098.
%B Nuclear Physics B (Proceedings Supplements)
%@versiontype publisher
%P 299-302
%4 sid.inpe.br/iris@1905/2005/07.29.03.11
%@documentstage not transferred
%D 1995
%V 43
%@doi 10.1016/0920-5632(95)00495-U
%A Oliveira Costa, Angélica de,
%A Smoot, George F.,
%@area CEA