X-ray Time Lags in TeV Blazars

Details X-ray Time Lags in TeV Blazars X-ray Time Lags in TeV Blazars

2011-05-19

arxiv.org/abs/1105.3768v1

2011JApA...32..185C

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 6 figures, Proceeding of `Multiwavelength Variability of Blazars', Guangzhou, China

Scientific paper

10.1007/s12036-011-9045-0

We use Monte Carlo/Fokker-Planck simulations to study the X-ray time lags. Our results show that soft lags will be observed as long as the decay of the flare is dominated by radiative cooling, even when acceleration and cooling timescales are similar. Hard lags can be produced in presence of a competitive achromatic particle energy loss mechanism if the acceleration process operates on a timescale such that particles are slowly moved towards higher energy while the flare evolves. In this type of scenario, the {\gamma} -ray/X-ray quadratic relation is also reproduced.

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