Reverberation in the bright NLS1 comma IGR J19378-0617

We propose to make a 120 ks XMMNewton observation coordinated with NuSTAR ofthe little known NLS1, IGR J193780617, in order to probe a broad range ofvariability timescales in this extremely bright, lowmass source. It has beenobserved with XMMNewton for only 12 ks and is clearly detected in the BAT70month catalog. Despite its short exposure, this source shows severalinteresting features that require further exploration, including a lowfrequencycontinuum lag, even hints of highfrequency reverberation, and a lowionizationwarm absorber in the RGS. It is also a hard Xray source that will clearly bedetected by NuSTAR. Given its strong variability and high count rate, it haspotential to reveal time lags above 10 keV. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]