Abstract

The power-law form of pulsar spectra is here derived solely from the observational data on micropulses and the quasi-steady time dependence of the magnetosphere. The values that can be assumed by the spectral index, –1, –5/3, –3 or –11/3, together with the high-frequency break and the low-frequency turnover of the spectrum are all features of the radiation from a randomly fluctuating electric current whose distribution on the large scale has a rotating pattern. The correlation between these and certain other features of a quasi-steady magnetosphere are also pointed out.

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