  A triggered 140 ks XMM-Newton observation of the narrow-line Seyfert 1 (NLS1)
Mrk 335 in December 2015 caught the active galaxy at its lowest X-ray flux
since 2007. The NLS1 is relatively quiescent for the first ~120 ks of the
observation before it flares in brightness by a factor of about five in the
last 20 ks. Although only part of the flare is captured before the observation
is terminated, the data reveal significant differences between the flare and
quiescent phases. During the low-flux state, Mrk 335 demonstrates a
reflection-dominated spectrum that results from a compact corona around a Kerr
black hole. In addition to the rapid brightening, the flare is further
described by spectral softening and a falling reflection fraction that are
consistent with previous observations advocating at least part of the corona in
Mrk 335 could be the base of an aborted jet. The spectrum during the flaring
interval reveals several residuals between the 2-3 sigma level that could be
attributed to absorption lines from a highly ionised plasma that is moving
outward at v~0.12c. It could be that the increased luminosity during the flare
enhances the radiation pressure sufficiently to launch a possible wind. If the
wind is indeed responding to the change in corona luminosity then it must be
located within ~80 Rg. The escape velocity at this distance is comparable to
the estimated wind velocity. If confirmed, this is the first example of a
radio-quiet AGN exhibiting behaviour consistent with both diffuse and
collimated outflow.
