Multiband Observations of the Quasar PKS 2326-502 during Active and Quiescent Gamma-Ray States in 2010-2012
Journal
Date Issued
2017
Author(s)
Dutka, Michael S.
•
Carpenter, Bryce D.
•
Ojha, Roopesh
•
Finke, Justin D.
•
•
Kadler, Matthias
•
Edwards, Philip G.
•
Stevens, Jamie
•
•
•
•
Krauß, Felicia
•
Müller, Cornelia
•
Wilms, Joern
•
Gehrels, Neil
Abstract
Quasi-simultaneous observations of the Flat Spectrum Radio Quasar PKS 2326-502 were carried out in the γ-ray, X-ray, UV, optical, near-infrared, and radio bands. Using these observations, we are able to characterize the spectral energy distribution (SED) of the source during two flaring and one quiescent γ-ray states. These data were used to constrain one-zone leptonic models of the SEDs of each flare and investigate the physical conditions giving rise to them. While modeling one flare required only changes in the electron spectrum compared to the quiescent state, modeling the other flare required changes in both the electron spectrum and the size of the emitting region. These results are consistent with an emerging pattern of two broad classes of flaring states seen in blazars. Type 1 flares are explained by changes solely in the electron distribution, whereas type 2 flares require a change in an additional parameter. This suggests that different flares, even in the same source, may result from different physical conditions or different regions in the jet.
Volume
835
Issue
2
Start page
182
Issn Identifier
0004-637X
Ads BibCode
2017ApJ...835..182D
Rights
open.access
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