Abstract
FROM an analysis of the emission bands in the spectra of 3C273 and 3C48 described in refs. 1 and 2, it may be concluded that the size of the gas envelopes around ‘radio stars’ (emitting continuous spectrum) must be at least 1020 cm. Indeed, the total energy radiated in any emission band is L α N2er3x½, where Neis the electron density, r is the radius of the gas envelope and x is the non-uniformity factor which has been assumed to be ∼ 10−2.
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SHKLOVSKY, J. Nature of Sources of Cosmic Synchrotron Radiation. Nature 201, 588 (1964). https://doi.org/10.1038/201588a0
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DOI: https://doi.org/10.1038/201588a0
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