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We analyze pulsar fluxes at 1400 MHz ($S_{1400}$) and distances ($d$)extracted from the Parkes Multibeam Survey. Under the assumption thatdistribution of pulsar luminosities is distance-independent, we find thateither (a) pulsar fluxes diminish with distance according to a non-standardpower law, due, we suggest, to the presence of a component with $S_{1400}\propto 1/d$, or (b) that there are very significant (i.e. order of magnitude)errors in the dispersion-measure method for estimating pulsar distances. Theformer conclusion (a) supports a model for pulsar emission that has alsosuccessfully explained the frequency spectrum of the Crab and 8 other pulsarsover 16 orders of magnitude of frequency, whilst alternative (b) wouldnecessitate a radical re-evaluation of both the dispersion-measure method andcurrent ideas about the distribution of free electrons within our Galaxy.

A Maximum-Likelihood Analysis of Observational Data on Fluxes and Distances of Radio Pulsars: Evidence for Violation of the Inverse-Square Law