Historical deabsorbed UV fluxes vs. simultaneous (a) X‐ray and (b) γ‐ray fluxes of 3C 279, on a logarithmic scale. Both panels show a clear correlation, with X‐rays varying slowly with respect to the UV and γ‐rays varying with higher amplitude than the UV. Except for the ASCA data of 1995 January, which have been analyzed by us, X‐ray and γ‐ray points are from Maraschi et al. (1994), Hartman et al. (1996), Hartman (1996), Sambruna (1997), Kubo et al. (1998), and Wehrle et al. (1998). The γ‐ray data have been converted to janskys according to Thompson et al. (1996).