091360

Low mass ( and amp amp amp lt 10^6Msun) AGN are important not just for understanding the evolution of supermassive black holes but they vary rapidly through accretion states allowing the study of physical processes which are unaccessible with larger mass AGN. NGC 4395 (virgul10^5Msun) is the brightest and most variable low mass AGN. Previous observations suggest that the X-ray spectrum shows both harder when brighter and softer when brighter behaviour. This transition is not seen in any other single AGN and may represent a change from coronal synchrotron to disc black body seed photons. This scenario cannot be confirmed without Nustara??s high energy band. Thus we propose 6x50 ks NuSTAR+6x25 XMM simultaneous pointings. We will also coordinate with HiPERCAM@GTC to obtain precise lags to probe the outer disc. [truncated! Please see actual data for full text]