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. 8

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EPIC spectrum of BL Lacertae on 2008 May 16–17; black squares, red triangles, and green diamonds represent MOS1, MOS2, and pn data, respectively. The bottom panel shows the deviations of the observed data from the folded model (a double power law with fixed absorption) in units of standard deviations.

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