Patterns of variability in gamma-ray blazars

Details Patterns of variability in gamma-ray blazars Patterns of variability in gamma-ray blazars

2008-07-14

arxiv.org/abs/0807.2253v2

Astronomy and Astrophysics

Astrophysics

12 pages, 4 figures. Poster presented at 37th COSPAR Assembly (Montreal, Canada, July 13-20, 2008), Session E17. Revised accor

Scientific paper

10.1016/j.asr.2008.12.020

Preliminary results of a systematic study on the simultaneous optical-to-X-rays variability in blazars are presented. Data from Swift observations of four bright gamma-ray blazars (3C 279, ON+231, S5 0716+71, PKS 2155-304) have been analyzed, compared, and discussed. Specifically, 3C 279 shows a variable flattening in the low energy part of the X-ray spectrum that appears to be confined in a specific X-ray vs optical/UV fluxes region. Some implications are shortly analyzed.

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