COSMIC MICROWAVE BACKGROUND ANISOTROPY INDUCED BY COSMIC STRINGS ON ANGULAR SCALES 15'

We have computed an estimate of the angular power spectrum of the cosm ic microwave background induced by cosmic strings on angular scales gr eater than or similar to 15', using a numerical simulation of a cosmic string network and have decomposed this pattern into scalar, vector, and tensor parts. The anisotropies from vector modes dominate except o n very small angular scales, and we find no evidence for strong acoust ic oscillations in the scalar anisotropy. The anisotropies generated a fter recombination are even more important than in adiabatic models. T he total anisotropy on small scales is inconsistent with current measu rements. The calculation has a number of uncertainties, the largest of which is due to finite temporal range.