We have estimated the power spectra of density fluctuations produced by cosmic strings with neutrino hot dark matter (HDM). Normalizing at 8${\mathit{h}}^{\mathrm{-}1}$ Mpc [where h=${\mathit{H}}_0$/(100 km/sec Mpc) and ${\mathit{H}}_0$ is the Hubble constant] we find that the spectrum has more power on small (≲10${\mathit{h}}^{\mathrm{-}2}$ Mpc) scales than HDM+ inflation, less than cold dark matter (CDM) + inflation, and significantly less than CDM + strings. With HDM, large wakes (∼20${\mathit{h}}^{\mathrm{-}2}$ Mpc) give significant contribution to the power on the galaxy scale and may give rise to large sheets of galaxies.

• Received 13 April 1992

DOI:https://doi.org/10.1103/PhysRevLett.69.2615