X-ray variability patterns in blazars

Abstract

We study the expected variability patterns of blazars within the two-zone acceleration model putting special emphasis on flare shapes and spectral lags. We solve semi-analytically the kinetic equations which describe the particle evolution in the acceleration and radiation zone. We then perturb the solutions by introducing Lorentzian variations in its key parameters and examine the flaring behavior of the system. We apply the above to the X-ray observations of blazar 1ES 1218+304 which exhibited a hard lag behavior during a flaring episode and discuss possibilities of producing it within the context of our model. The steady-state radio to X-rays emission of 1ES 1218+304 can be reproduced with parameters which lie well within the ones generally accepted from blazar modeling. Additionally, we find that the best way to explain its flaring behavior is by varying the rate of particles injected in the acceleration zone.

accepted by A&A

References in corpus (6)

• Stochastic particle acceleration and synchrotron self--Compton radiation in TeV blazars
• A multi-zone model for simulating the high energy variability of TeV blazars
• Particle-acceleration timescales in TeV blazar flares
• On the rapid TeV flaring activity of Markarian 501
• Modelling the variability of 1ES1218+30.4
• A Suzaku X-Ray Study of the Particle Acceleration Processes in the Relativistic Jet of Blazar Mrk 421

Cited by in corpus (6)

• Mrk 421 as a case study for TeV and X-ray variability in leptohadronic models
• Emitting electrons spectra and acceleration processes in the jet of Mrk 421: from low state to giant flare state
• NuSTAR perspective on high-redshift MeV blazars
• Radio-Gamma-ray connection and spectral evolution in 4C +49.22 (S4 1150+49): the Fermi, Swift and Planck view
• Time-dependent modelling of PKS 2155-304 in a low state
• Probing an X-ray flare pattern in Mrk 421 induced by multiple stationary shocks: a solution to the bulk Lorentz factor crisis