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- W2073717306 abstract "We have undertaken an investigation of recent flux variability in BL Lac. We present optical observations taken over 22 nights documenting major as well. as minor outbursts. This has been combined, for purposes of multifrequency analysis, with published X-ray and gamma-ray data taken for an additional single night. On two nights in particular, including the night of the X-ray observations, a major outburst of about a full magnitude of variation was recorded All the data have been analyzed with theoretical models. Attempts were made to use synchrotron self-Compton and external Comptonization models to explain the data; however, both classes of models were found lacking. More satisfactory results were obtained using an analytical model proposed by Wang et al. that involves the evolution of synchrotron spectra in a homogeneous jet due to the injection of relativistic electrons, taking into account radiation losses during the outbursts. It is hoped that the results of this study of BL Lac, an archetype for the class of blazars in general, represent a more generic phenomenon applicable to the entire class." @default.
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- W2073717306 date "2000-07-10" @default.
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- W2073717306 title "Optical Variability of BL Lacertae during the Major Outburst of 1997" @default.
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- W2073717306 doi "https://doi.org/10.1086/309071" @default.
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