X-ray Time Lags in TeV Blazars

Journal of astrophysics and astronomy

M. Böttcher²  X. Chen1¹  G. Fossati¹  E. Liang¹ 

[1] Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.$$;Department of Physics and Astronomy, Astrophysical Institute, Ohio University, Athens, Ohio 45701, USA.$$

关键词: Galaxies: active;    galaxies: jets;    X-rays: theory.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown