Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Duty-cycle of Gamma-ray Blazars: a New Approach, New Results   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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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: stat