Abstract
THE unusual object BL Lacertae has attracted attention because of its large and erratic variability at optical, millimetre and centimetre wavelengths1–3. The general form of the variations at short radio wavelengths is compatible3–5 with the models of Van der Laan6 and Ozernoy and Sazonov7. We report here observations of the variability of BL Lac at relatively long radio wavelengths which are in serious conflict with these models.
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STANNARD, D., TREVERTON, A., PORCAS, R. et al. Low frequency variability of BL Lac. Nature 255, 384–385 (1975). https://doi.org/10.1038/255384a0
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DOI: https://doi.org/10.1038/255384a0
