Pulsar Flux-Density Spectra

We have obtained time-averaged flux-density spectra of 10 pulsars with simultaneous observations at six frequencies between 250 and 8085 MHz. The effects of interstellar scintillation on the accuracy of our measurements are discussed. All of the pulsars exhibited a power-law spectrum at high frequencies with spectral indices between -1.6 and - 3.0. Several of the pulsars show a more positive spectral index at the low-frequency end of our data. Subject headings: pulsars - spectra, radio