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- W4387561520 abstract "Abstract The long term broadband spectral study of Flat Spectrum Radio Quasars during different flux states has the potential to infer the emission mechanisms and the cause of spectral variations. To scrutinize this, we performed a detailed broadband spectral analysis of 3C 279 using simultaneous Swift-XRT/UVOT and Fermi-LAT observations spanning from August 2008 to June 2022. We also supplement this with the simultaneous NuSTAR observations of the source. The optical/UV, X-ray, and γ-ray spectra were individually fitted by a power-law to study the long term variation in the flux and the spectral indices. A combined spectral fit of simultaneous optical/UV and X-ray spectra was also performed to obtain the transition energy at which the spectral energy distribution is minimum. The correlation analysis suggests that the long term spectral variations of the source are mainly associated with the variations in the low energy index and the break energy of the broken power-law electron distribution which is responsible for the broadband emission. The flux distribution of the source represents a log-normal variability while the γ-ray flux distribution showed a clear double log-normal behaviour. The spectral index distributions were again normal except for γ-ray which showed a double-Gaussian behaviour. This indicates that the log-normal variability of the source may be associated with the normal variations in the spectral index. The broadband spectral fit of the source using synchrotron and inverse Compton processes indicates different emission processes are active at optical/UV, X-ray, and γ-rayenergies." @default.
- W4387561520 created "2023-10-12" @default.
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- W4387561520 date "2023-10-12" @default.
- W4387561520 modified "2023-10-13" @default.
- W4387561520 title "Understanding the broadband emission process of 3C 279 through long term spectral analysis" @default.
- W4387561520 doi "https://doi.org/10.1093/mnras/stad3094" @default.
- W4387561520 hasPublicationYear "2023" @default.
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