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Paper: BATSE Observations of BL Lac objects
Volume: 159, BL Lac Phenomenon
Page: 209
Authors: Connaughton, V.; McCollough, M.; Robinson, C. R.; Laurent-Muehleisen, S.
Abstract: The Burst And Transient Source Experiment (BATSE) on the Compton Gamma-Ray Observatory has been shown to be sensitive to non-transient hard X-ray sources in our galaxy, down to flux levels of 100 mCrab for daily measurements, 3 mCrab for integrations over several years. We use the continuous 7-year BATSE database and the Earth Occultation technique to extract average flux values between 20 and 200 keV from complete X-ray and radio selected BL Lac samples, and to measure their variability over periods of months to years. We compare the behaviour and the spectral characteristics of the objects in the XBL and RBL classes.
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