MICROWAVE ANISOTROPIES FROM TEXTURE-SEEDED STRUCTURE FORMATION

Citation
R. Durrer et al., MICROWAVE ANISOTROPIES FROM TEXTURE-SEEDED STRUCTURE FORMATION, Physical review. D. Particles and fields, 49(2), 1994, pp. 681-691
Citations number
28
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
49
Issue
2
Year of publication
1994
Pages
681 - 691
Database
ISI
SICI code
0556-2821(1994)49:2<681:MAFTSF>2.0.ZU;2-9
Abstract
The cosmic microwave anisotropies in a scenario of large-scale structu re formation with cold dark matter (CDM) and texture are discussed and compared with recent observational results of the COBE satellite. A c ouple of important statistical parameters are determined. The fluctuat ions are slightly non-Gaussian. The quadrupole anisotropy is 1.5+/-1.2 X10(-5) and the fluctuations on an angular scale of 10 degrees are (3. 8+/-2.6)X10(-5). The COBE results are within about one standard deviat ion of the typical texture+CDM model discussed in this paper. On simil ar to 2 degrees angular scale, the fluctuations are significantly larg er than recent experimental bounds. Collapsing textures are modeled by spherically symmetric field configurations. This leads to uncertainti es of about a factor of 2.