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The Microvariable Activity of BL Lacertae

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Department of Physics, University of Colorado Denver, Campus Box 157, P.O. Box 173364, Denver, CO 80217, USA
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Department of Physics, University of Arizona, 1118 E. Fourth Street, P.O. Box 210081, Tucson, AZ 85721, USA
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Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602, USA
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Authors to whom correspondence should be addressed.
Galaxies 2020, 8(1), 11; https://doi.org/10.3390/galaxies8010011
Received: 10 December 2019 / Revised: 4 February 2020 / Accepted: 5 February 2020 / Published: 7 February 2020
We report on seven nights of optical observation taken over a two-week period, and the resultant analysis of the intermediate-frequency peaked BL Lac object (IBL), BL Lac itself, at redshift z = 0.069. The microvariable behavior can be confirmed over the course of minutes for each night. A relativistic beaming model was used in our analysis, to infer changes to the line of sight angles for the motion of the different relativistic components. This model has very few free parameters. The light curves we generated show both high and moderate frequency cadence to the variable behavior of BL Lac itself, in addition to the well documented long-term variability. View Full-Text
Keywords: galaxies: active; BL Lacertae objects: individual: BL Lacertae; galaxies: jets galaxies: active; BL Lacertae objects: individual: BL Lacertae; galaxies: jets
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Sadun, A.C.; Asadi-Zeydabadi, M.; Hindman, L.; Moody, J.W. The Microvariable Activity of BL Lacertae. Galaxies 2020, 8, 11.

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