Ton S 180 : Probe of the X-ray reprocessing and the 'very high state. of AGN

We propose a 130ks observation of the NLS1 TonS180 which has one of thestrongest soft Xray excesses, implying strong reprocessing, but no previouslong XMM observation to determine whether, contrary to previous CCF results,it shows the negative high frequency spectral lags expected from such a source.We will model the lags to measure BH spin (ie inner disc radius) and thusconfirm or deny blurred disc reprocessing models for the soft excess and thealso the high spin explanation for NLS1s. We also determine BH mass, which ispresently poorly known. From the PSD we will determine whether TonS is only thesecond very high state AGN known and, using its very high accretion rate, testM/mdot/timescale scaling relationships for AGN. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]