Multiwavelength Observations of the Extreme X-Ray Selected BL Lac Object PG 1553+11 (1ES 1553+113)

dc.creatorOsterman, M. Angela
dc.creatorMiller, H. Richard
dc.creatorCampbell, Amy M.
dc.creatorMarshall, Kevin
dc.creatorMcFarland, John P.
dc.creatorAller, Hugh
dc.creatorAller, Margo
dc.creatorFried, Robert E.
dc.creatorKurtanidze, Omar M.
dc.creatorNikolashvili, Maria G.
dc.creatorTornikoski, Merja
dc.creatorValtaoja, Esko
dc.date2006-05-02
dc.date.accessioned2026-07-07T11:25:33Z
dc.date.available2026-07-07T11:25:33Z
dc.descriptionPG 1553+11 was the target of a coordinated three week multiwavelength campaign during 2003 April and May. A significant X-ray flare was observed during the second half of this campaign. Although no optical flare was recorded during the X-ray campaign, optical observations obtained immediately prior to the campaign displayed a higher flux than that recorded during the campaign. An optical flare was observed a few days after the end of the X-ray campaign and may be related to the X-ray flare. Radio observations were made at three frequencies, with no significant changes in flux detected near the times of the optical and X-ray flares. The spectral energy distributions and flux ratios in different wavebands observed for this object are compared to other X-ray selected blazars to demonstrate how PG 1553+11 is an extreme member of this group.
dc.description28 pages, 4 figures, 7 tables. Accepted for publication in AJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0605076
dc.identifierhttp://arxiv.org/abs/astro-ph/0605076
dc.identifierAstron.J.132:873-882,2006
dc.identifierdoi:10.1086/505565
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195543
dc.subjectAstrophysics
dc.titleMultiwavelength Observations of the Extreme X-Ray Selected BL Lac Object PG 1553+11 (1ES 1553+113)
dc.typetext

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