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The Large Gamma-Ray Flare of the Flat-Spectrum Radio Quasar PKS0346-27

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Naval Research Laboratory Washington

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Aims. In this paper, we characterize the first gamma-ray flaring episode of the flat-spectrum radio quasar PKS 0346-27 z 0.991, as revealed by Fermi-LAT monitoring data, and the concurrent multi-wavelength variability observed from radio through X-rays. Methods. We studied the long- and short-term flux and spectral variability from PKS 0346-27 by producing gamma-ray light curves with different time binning. We complement the Fermi-LAT data with multi-wavelength observations from the Atacama Large Millimeter Array radio mm-band, the Rapid Eye Mount telescope near-infrared and Swift optical-UV and X-rays. This quasi-simultaneous multi-wavelength coverage allowed us to construct time-resolved spectral energy distributions SEDs of PKS 0346-27 and compare the broadband spectral properties of the source between different activity states using a one-zone leptonic emission model.

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Journal Article - Open Access

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Astronomy and Astrophysics , 627, 01 Jan 0001, 01 Jan 0001,



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Approved For Public Release;

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