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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present long-term multiwavelength observations of blazar CTA 102($z=1.037$). Detailed temporal and spectral analyses of $\gamma$-ray, X-ray andUV/optical data observed by {\it Fermi}-LAT, Swift XRT, NuSTAR and Swift-UVOTover a period of 14 years, between August 2008 and March 2022, was performed.We found strong variability of source emission in all the considered bands,especially in the $\gamma$-ray band it exhibited extreme outbursts when theflux crossed the level of $10^{-5}\:{\rm photon\:cm^{-2}\:s^{-1}}$. Using theBayesian Blocks algorithm, we split the adaptively binned $\gamma$-ray lightcurve into 347 intervals of quiescent and flaring episodes and for each periodbuilt corresponding multiwavelength spectral energy distributions (SEDs), usingthe available data. Among the considered SEDs, 117 high-quality (quasi)contemporaneous SEDs which have sufficient multiwavelength data, were modeledusing JetSeT framework within a one-zone leptonic synchrotron and inverseCompton emission scenario assuming the emitting region is within thebroad-line-region and considering internal and external seed photons for theinverse Compton up-scattering. As a result of modeling, the characteristics ofthe relativistic electron distribution in the jet as well as jet properties areretrieved and their variation in time is investigated. The applied model canadequately explain the assembled SEDs and the modelling shows that the data inthe bright flaring periods can be reproduced for high Doppler boosting andmagnetic field. The obtained results are discussed in the context of particlecooling in the emitting region.

Modeling the time variable spectral energy distribution of the blazar CTA 102 from 2008 to 2022