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Radio–optical flux behaviour and spectral energy distribution of the intermediate blazar GC 0109+224

dc.contributor.authorCiprini, Stefanoen_US
dc.contributor.authorTosti, Ginoen_US
dc.contributor.authorTeräsranta, Harrien_US
dc.contributor.authorAller, Hugh D.en_US
dc.date.accessioned2010-06-01T20:50:54Z
dc.date.available2010-06-01T20:50:54Z
dc.date.issued2004-03en_US
dc.identifier.citationCiprini, Stefano; Tosti, Gino; TerÄsranta, Harri; Aller, Hugh D. (2004). "Radio–optical flux behaviour and spectral energy distribution of the intermediate blazar GC 0109+224." Monthly Notices of the Royal Astronomical Society 348(4): 1379-1387. <http://hdl.handle.net/2027.42/73946>en_US
dc.identifier.issn0035-8711en_US
dc.identifier.issn1365-2966en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/73946
dc.description.abstractAbout 20 years of radio observations of the BL Lac object GC 0109+224 (S2 0109+22, RGB J0112+227) in five bands (from 4.8 to 37 GHz) are presented and analysed together with optical data. Over the past 10 years this blazar has exhibited enhanced activity. There is only weak correlation between radio and optical flare delays, usually protracted on longer time-scales in the radio with respect to the optical. In some cases no radio flare counterpart was observed for the optical outbursts. The radio variability, characterized by peak superposition, shows hints of some characteristic time-scales (around the 3–4 yr), and a fluctuation mode between the flickering and the shot noise. The reconstructed spectral energy distribution, poorly monitored at high energies, is preliminarily parametrized with a synchrotron–self-Compton description. The smooth synchrotron continuum, peaked in the near-infrared–optical bands, strengthens the hypothesis that this source could be an intermediate blazar. Moreover, the intense flux in millimetre bands, and the optical and X-ray brightness, might suggest a possible detectable Γ-ray emission.en_US
dc.format.extent1325388 bytes
dc.format.extent3109 bytes
dc.format.mimetypeapplication/pdf
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dc.publisherBlackwell Science Ltden_US
dc.rights2004 RASen_US
dc.subject.otherRadiation Mechanisms: Non-thermalen_US
dc.subject.otherMethods: Statisticalen_US
dc.subject.otherBL Lacertae Objects: Generalen_US
dc.subject.otherBL Lacertae Objects: Individual: 0109+224en_US
dc.subject.otherBL Lacertae Objects: Individual: 0112+227en_US
dc.subject.otherRadio Continuum: Galaxiesen_US
dc.titleRadio–optical flux behaviour and spectral energy distribution of the intermediate blazar GC 0109+224en_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelAstronomyen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Astronomy, Dennison Bldg, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationotherPhysics Department and Astronomical Observatory, University of Perugia, via Pascoli, 06123 Perugia, Italyen_US
dc.contributor.affiliationotherINFN, Perugia Section, via Pascoli, 06123 Perugia, Italyen_US
dc.contributor.affiliationotherMetsÄhovi Radio Observatory, Helsinki University of Technology, 02540 KylmÄlÄ, Finlanden_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/73946/1/j.1365-2966.2004.07467.x.pdf
dc.identifier.doi10.1111/j.1365-2966.2004.07467.xen_US
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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