Fig. 1.
Multiwavelength light curves of NGC 3516. Top panel: long-term photometric optical and UV light curves in B and UVW2 filters: circles denote data from Shapovalova et al. (2019), squares denote the result from this paper (SAI CMO), diamonds stand for the data from SAI Crimea campaign shown for continuity, and asterisks denote UVW2 UVOT Swift photometry. All magnitudes are reduced to the same aperture of 10″. A dashed horizontal line at magnitude 14.1 is given at the bottom of the figure to guide the eye, and the arrow indicates epochs when spectra were acquired. Bottom panel: Swift/XRT 0.5−10 keV X-ray flux light curve in erg cm−2 s−1.
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