Microwave anisotropies from texture-seeded structure formation

Journal Article · Sat Jan 15 00:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.681· OSTI ID:5410132

Durrer, R ^[1]; Howard, A ^[2]; Zhou, Z ^[1]

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1. Universitaet Zuerich, Institut fuer Theoretische Physik, CH-8001 Zuerich (Switzerland)
2. Princeton University Observatory, Peyton Hall, Princeton, New Jersey 08544 (United States)

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[plus minus]1.2[times]10[sup [minus]5] and the fluctuations on an angular scale of 10[degree] are (3.8[plus minus]2.6)[times]10[sup [minus]5]. The COBE results are within about one standard deviation of the typical texture+CDM model discussed in this paper. On [similar to]2[degree] 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.

• OSTI ID: 5410132
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 49:2; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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