X-ray Time Lags in TeV Blazars |
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| Authors: | X Chen G Fossati E Liang M B?ttcher |
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| Institution: | 1. Department of Physics and Astronomy, Rice University, Houston, Texas, 77005, USA
2. Department of Physics and Astronomy, Astrophysical Institute, Ohio University, Athens, Ohio, 45701, USA
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| Abstract: | We use Monte Carlo/Fokker?CPlanck 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 ??-ray/X-ray quadratic relation is also reproduced. |
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