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The Duty-cycle of Gamma-ray Blazars: a New Approach, New Results

S. Vercellone·S. Soldi·A. W. Chen·M. Tavani
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Abstract

We study several properties of blazars detected in the gamma-ray energy range by comparing the EGRET sources with a sample of radio blazars which can be considered possible gamma-ray candidates. We define three classes: non-gamma-ray blazars, blazars with quasi-steady gamma-ray emission, and gamma-ray blazars with substantial activity level. By combining the information of detected and candidate AGNs, we characterise the blazar activity, including the discovery of a region of consistency between the gamma-ray flaring duty-cycle and the recurrence time between flares. We also find a possible relation between the activity index of FSRQs and their black hole mass.

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S. Vercellone, S. Soldi, A. W. Chen, M. Tavani. 2004-11-15. The Duty-cycle of Gamma-ray Blazars: a New Approach, New Results. https://doi.org/10.1111/j.1365-2966.2004.08119.x

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