Show simple item record

dc.contributor.authorVenter, Christo
dc.contributor.authorVorster, Michael Johannes
dc.contributor.authorBüsching, Ingo
dc.contributor.authorDe Jager, Ocker Cornelis
dc.date.accessioned2012-09-05T08:16:06Z
dc.date.available2012-09-05T08:16:06Z
dc.date.issued2011
dc.identifier.citationBüsching, I. et al. 2011. Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state. Astronomy & astrophysics, 533(A110):1-9. [http://www.aanda.org]en_US
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/7230
dc.description.abstractTeV γ-ray (H.E.S.S.), GeV γ-ray (Fermi/LAT), X-ray (RXTE, Swift), UV (Swift) and optical (ATOM, Swift) bands. This campaign was carried out during a high flux state in the synchrotron regime. The flux in the optical and X-ray bands reached the level of the historical maxima. The hard GeV spectrum observed with Fermi/LAT connects well to the very high energy (VHE, E > 100 GeV) spectrum measured with H.E.S.S. with a peak energy between ∼5 and 500 GeV. Compared to observations with contemporaneous coverage in the VHE and X-ray bands in 2004, the X-ray flux was ∼50 times higher during the 2009 campaign while the TeV γ-ray flux shows marginal variation over the years. The spectral energy distribution during this multi-wavelength campaign was fit by a one zone synchrotron self-Compton model with a well determined cutoff in X-rays. The parameters of a one zone SSC model are inconsistent with variability time scales. The variability behaviour over years with the large changes in synchrotron emission and small changes in the inverse Compton emission does not warrant an interpretation within a one-zone SSC model despite an apparently satisfying fit to the broadband data in 2009.en_US
dc.description.urihttp://dx.doi.org/10.1051/0004-6361/201016170
dc.description.urihttp://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/abs/2011/09/aa16170-10/aa16170-10.html
dc.language.isoenen_US
dc.publisherEDP Scienceen_US
dc.subjectGalaxies: activeen_US
dc.subjectBL Lacertae objects: individual: PKS 2005-489en_US
dc.titleSimultaneous multi-wavelength campaign on PKS 2005-489 in a high stateen_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record