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28 March 2024
 
  » arxiv » astro-ph/0411389

 Article overview


The Duty-cycle of Gamma-ray Blazars: a New Approach, New Results
S. Vercellone ; S. Soldi ; A.W. Chen ; M. Tavani ;
Date 15 Nov 2004
Journal Mon.Not.Roy.Astron.Soc. 353 (2004) 890; AIP Conf.Proc. 745 (2005) 493-498
Subject astro-ph
AffiliationIASF/CNR, Milano), S. Soldi (ISDC, Versoix), A.W. Chen (CIFS, Torino & IASF/CNR, Milano), M. Tavani (IASF/CNR, Roma & CIFS, Torino
AbstractWe 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.
Source arXiv, astro-ph/0411389
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