The symbiosis of variable absorption and blurred reflection in the X-ray-absorbed Seyfert 1.5 galaxy NGC 4151

We present results on time resolved spectroscopy of the Seyfert 1.5 galaxy NGC 4151. Suzaku, NuSTAR and XMM-Newton observations from mid 2011 until the end of 2012 reveal significant variability in absorption by intermediately ionized gas on various time-scales. The soft X-rays, on the other hand, stay rather constant, favoring emission from large-scale, diffuse gas.  The soft emission lines are consistent with high resolution spectroscopic studies of the extended emission resolved with Chandra gratings.  We extend on recent work by Keck et al., who modeled relativistically blurred, reflected disk emission in a 150 ks  Suzaku/NuSTAR observation from 2012. They explored multiple emitting/reflecting components in the context of the "lamppost" geometry.  We perform additional testing of blurred disk reflection in NGC 4151, using Suzaku and XMM-Newton observations.  We use the latest version of RELXILL, which incorporates a fully angle-resolved treatment of ionized reflection in combination with a thermal Comptonization continuum.