Swift follow-up of the gigantic TeV outburst of PKS 2155-304 in 2006

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dc.creatorFoschini, L.
dc.creatorGhisellini, G.
dc.creatorTavecchio, F.
dc.creatorTreves, A.
dc.creatorMaraschi, L.
dc.creatorGliozzi, M.
dc.creatorRaiteri, C. M.
dc.creatorVillata, M.
dc.creatorPian, E.
dc.creatorTagliaferri, G.
dc.creatorTosti, G.
dc.creatorSambruna, R. M.
dc.creatorMalaguti, G.
dc.creatorDi Cocco, G.
dc.creatorGiommi, P.
dc.date2007-03-30
dc.date.accessioned2026-07-07T10:37:01Z
dc.date.available2026-07-07T10:37:01Z
dc.descriptionAt the end of July 2006, the blazar PKS 2155-304 (z=0.116) underwent a strong outburst observed at TeV energies by HESS (up to 17 Crab flux level at E > 200 GeV). The Swift satellite followed the evolution of the source for about one month. The data analysis - reported in another paper - has shown that, despite the violent activity at TeV energies, the synchrotron energy distribution increased in normalization, but only with a small shift in frequency. In the present work, we fit the broad-band spectrum with a log-parabolic model, to search for indications of intrinsic curvature, which in turn is usually interpreted as a signature of energy-dependent acceleration mechanisms of electrons.
dc.description2 pages, 1 figure, 1 Table. Proceedings of the First GLAST Symposium, to be published
dc.identifierhttps://arxiv.org/abs/astro-ph/0703786
dc.identifierhttp://arxiv.org/abs/astro-ph/0703786
dc.identifierAIPConf.Proc.921:329-330,2007
dc.identifierdoi:10.1063/1.2757336
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180243
dc.subjectAstrophysics
dc.titleSwift follow-up of the gigantic TeV outburst of PKS 2155-304 in 2006
dc.typetext

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