Fig. 2
Examples of NGC 5548 Swift XRT spectra taken at different epochs. The unobscured spectrum (shown in blue) corresponds to the archival 2005 and 2007 data. The low-flux obscured spectrum (shown in red) is produced from observations taken between 22 June and 1 August 2013 (56 465−56 505 in MJD). The high-flux obscured spectrum (shown in green) corresponds to observations taken between 20 March and 29 April 2014 (56 736−56 776 in MJD). The visible spectral changes are indicative of variability induced by both the obscurer and the underlying continuum emission.
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