MICROWAVE ANISOTROPIES FROM TEXTURE-SEEDED STRUCTURE FORMATION

The cosmic microwave anisotropies in a scenario of large-scale structure formation with cold dark matter (CDM) and texture are discussed and compared with recent observational results of the COBE satellite. A couple of important statistical parameters are determined. The fluctuations are slightly non-Gaussian. The quadrupole anisotropy is 1.5+/-1.2X10(-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 deviation of the typical texture+CDM model discussed in this paper. On similar to 2 degrees angular scale, the fluctuations are significantly larger than recent experimental bounds. Collapsing textures are modeled by spherically symmetric field configurations. This leads to uncertainties of about a factor of 2.