English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Recent analysis of blazar variability has revealed a proportionality betweenthe mean flux and the root mean squared (rms) fluctuations about the mean flux.Although such rms-flux relation has been previously observed in the accretiondisc/corona variability of X-ray binaries and Seyfert galaxies, and has beenextensively modelled, its emergence in the jet light curves of blazars callsfor a revised theoretical understanding of this feature. In this work, weanalyse the time variability properties of realistic multi-wavelength jet lightcurves, simulated in the context of a simplified version of the internal shocksmodel, particularly focusing on the rms-flux relation. These shocks acceleratethe jet electrons to relativistic energies, which then cool radiatively viasynchrotron and inverse-Compton processes. We find that the rms-flux relationmay be consistently recovered in the cases, in which the shocks have differentamplitudes based on the speed of the colliding blobs generating them as opposedto all shocks having the same amplitude. We observe that the slope of therms-flux relation depends on the wavelength at which the variability isobserved and the energy distribution of the electron population. We find thatthe accretion disc and the jet variability are anti-correlated, with the latterlagging that of the disc. Our results provide crucial constraints on thephysical properties of the jet, and the mode of connection through which theaccretion disc and jet may be related.

RMS-Flux Relation and Disc-Jet Connection in Blazars in the Context of the Internal Shocks Model