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dc.contributor.authorBoettcher, Markusen_US
dc.contributor.authorReimer, Anitaen_US
dc.contributor.authorMarscher, Alan P.en_US
dc.date.accessioned2017-04-24T02:45:09Z
dc.date.available2017-04-24T02:45:09Z
dc.date.issued2009-01
dc.identifierhttp://arxiv.org/abs/0810.4864v2
dc.identifier.citationMarkus Boettcher, Anita Reimer, Alan P Marscher. "Implications of the VHE Gamma-Ray Detection of the Quasar 3C279." AIP Conf.Proc., Volume 1085, pp. 427 - 430.
dc.identifier.urihttps://hdl.handle.net/2144/21719
dc.description.abstractThe MAGIC collaboration recently reported the detection of the quasar 3C279 at > 100 GeV gamma-ray energies. Here we present simultaneous optical (BVRI) and X-ray (RXTE PCA) data from the day of the VHE detection and discuss the implications of the snap-shot spectral energy distribution for jet models of blazars. A one-zone synchrotron-self-Compton origin of the entire SED, including the VHE gamma-ray emission can be ruled out. The VHE emission could, in principle, be interpreted as Compton upscattering of external radiation (e.g., from the broad-line regions). However, such an interpretation would require either an unusually low magnetic field of B ~ 0.03 G or an unrealistically high Doppler factor of Gamma ~ 140. In addition, such a model fails to reproduce the observed X-ray flux. This as well as the lack of correlated variability in the optical with the VHE gamma-ray emission and the substantial gamma-gamma opacity of the BLR radiation field to VHE gamma-rays suggests a multi-zone model. In particular, an SSC model with an emission region far outside the BLR reproduces the simultaneous X-ray -- VHE gamma-ray spectrum of 3C279. Alternatively, a hadronic model is capable of reproducing the observed SED of 3C279 reasonably well. However, the hadronic model requires a rather extreme jet power of L_j ~ 10^{49} erg s^{-1}, compared to a requirement of L_j ~ 2 X 10^{47} erg s^{-1} for a multi-zone leptonic model.en_US
dc.format.extentp. 427 - 430en_US
dc.relation.ispartofAIP Conf.Proc.
dc.subjectAstrophysicsen_US
dc.subjectQuasar 3C 279en_US
dc.subjectGamma-ray detectionen_US
dc.titleImplications of the VHE gamma-ray detection of the Quasar 3C279en_US
dc.typeArticleen_US
dc.identifier.doi10.1063/1.3076699
pubs.elements-sourcearxiven_US
pubs.notesAccepted for publication. Several clarifications and additions to the manuscript to match the accepted version.en_US
pubs.notesEmbargo: Not knownen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
dc.identifier.orcid0000-0001-7396-3332 (Marscher, Alan P)


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