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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27089
Title: Multiband Observations of the Quasar PKS 2326-502 during Active and Quiescent Gamma-Ray States in 2010-2012
Authors: Dutka, Michael S.
Carpenter, Bryce D.
Ojha, Roopesh
Finke, Justin D.
D'AMMANDO, FILIPPO 
Kadler, Matthias
Edwards, Philip G.
Stevens, Jamie
TORRESI, ELEONORA 
GRANDI, PAOLA
Nesci, Roberto
Krauß, Felicia
Müller, Cornelia
Wilms, Joern
Gehrels, Neil
Issue Date: 2017
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 835
Issue: 2
First Page: 182
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.
URI: http://hdl.handle.net/20.500.12386/27089
URL: https://iopscience.iop.org/article/10.3847/1538-4357/835/2/182
ISSN: 0004-637X
DOI: 10.3847/1538-4357/835/2/182
Bibcode ADS: 2017ApJ...835..182D
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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