XMM-Newton observation of M51: Confirming periodicity and iron line from ULXs

We propose a 100ks observation of the nearby galaxy M51, which hosts nine ULXsand a low luminosity AGN. The primary purpose of our observation is to confirmthe periodicity of about 6000s from an ULX and iron line from another ULX inM51, as suggested by earlier short Xray observations. The proposed 100ksobservation will decisively establish the presence of both periodicity and ironline, and enable us to make a detailed study of these features and to search forsimilar features in other ULXs. Our observations will also provide power densityspectra of ULXs, and enable us to detect possible presence of breaks at certainfrequencies that will directly establish if ULXs are intermediate mass blackholes. The single observation will yield a wealth of information on the nature of nine ULXs. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]