UV TO HARD X-RAY PROPERTIES OF RAD INEFFIC LOW LUMIN AGN NGC 3998 AND NGC 4579

LLAGN likely have radiativelyinefficient accretion flows (RIAFs) where at leastthe inner accretion disk is a spherical plasma while the outer regions may be ina standard geometricallythin accretion disk. We propose to observe two of thebrightest LLAGN with NuSTAR and XMMNewton. The NuSTAR data will provide, forthe first time, coverage of these sources up to 50 keV, and theNuSTAR+XMMNewton broad band spectrum will allow for the measurement (or placingstringent constraints) on the high energy cutoff in these sources, allowing fora comparison to luminous AGN. Using the XMMNewton OM, these data will providesimultaneous UVXray SED that can be fit to RIAF models. All this will add tothe growing number of NuSTAR AGN and extend the hard Xray properties to very low Eddington rates. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]