Another look at the BL Lacertae flux and spectral variability - Observations by GASP-WEBT, XMM-Newton, and Swift in 2008–2009

C. M. Raiteri; M. Villata; L. Bruschini; A. Capetti; O. M. Kurtanidze; V. M. Larionov; P. Romano; S. Vercellone; I. Agudo; H. D. Aller; M. F. Aller; A. A. Arkharov; U. Bach; A. Berdyugin; D. A. Blinov; M. Böttcher; C. S. Buemi; P. Calcidese; D. Carosati; R. Casas; W.-P. Chen; J. Coloma; C. Diltz; A. Di Paola; M. Dolci; N. V. Efimova; E. Forné; J. L. Gómez; M. A. Gurwell; A. Hakola; T. Hovatta; H. Y. Hsiao; B. Jordan; S. G. Jorstad; E. Koptelova; S. O. Kurtanidze; A. Lähteenmäki; E. G. Larionova; P. Leto; E. Lindfors; R. Ligustri; A. P. Marscher; D. A. Morozova; M. G. Nikolashvili; K. Nilsson; J. A. Ros; P. Roustazadeh; A. C. Sadun; A. Sillanpää; J. Sainio; L. O. Takalo; M. Tornikoski; C. Trigilio; I. S. Troitsky; G. Umana

doi:10.1051/0004-6361/201015191

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Volume 524 (December 2010)

A&A, 524 (2010) A43

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Fig. 5

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Swift-XRT spectrum of BL Lacertae on 2008 August 29. The bottom panel shows the deviations of the observed data from the folded model (a single power law with fixed absorption) in units of standard deviations.

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