Multi-wavelength flux variability from relaxation wave in relativistic jet
Authors/Creators
- 1. LUTH, Observatoire de Paris, CNRS, PSL, Universit\'{e} de Paris; 5 Place Jules Janssen, 92190 Meudon, France
Description
Multi-wavelength flux variabilities observed in parsec-scale relativistic jets are most often attributed to the diffusive acceleration of a population of relativistic electrons on internal shocks. The observed time-scale of variability depends on the frequency, with several orders of magnitudes between radio and X band.
The modeling of jet is done with the SRHD code AMRVAC with the treatment of particle injection. To that, we couple treatment of radiative transfer to study the flux coming from a relativistic jet considering a turbulent magnetic field. We follow the propagation of a moving shock wave interacting with a standing shock structure inside the jet.
Synchrotron emission and radiative transfer are calculated in post-treatment (Riptide code) for given observation angles and frequencies.
We show the emergence of flare events at various frequencies with various time-scales during the interaction between moving and standing shock.
In addition, we highlight the emission signature coming from relaxation waves forming and propagating due to the jet relaxation. We demonstrate the appearance of a moving, expanding funnel structure behind the moving shock where rarefaction regions can form and dominate the flux emission under certain conditions with emergence of flares echoes.
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Additional details
References
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