Articles written in Journal of Astrophysics and Astronomy
Volume 32 Issue 1-2 March 2011 pp 185-188 Part 4. Emission Models and Theory
X-ray Time Lags in TeV Blazars
X. Chen G. Fossati E. Liang M. Böttcher
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 time scales are similar. Hard lags can be produced in the presence of a competitive achromatic particle energy loss mechanism if the acceleration process operates on a time scale such that particles are slowly moved towards higher energy while the flare evolves. In this type of scenario, the 𝛾-ray/X-ray quadratic relation is also reproduced.
Volume 44, 2023
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