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IRAS 12397+3333 is a narrow line Seyfert 1 galaxy (NLS1) discovered as a bright soft X-ray Active Galactic Nucleus (AGN) during the ROSAT All-Sky survey. Although it exhibits a soft X-ray spectrum it shows a high degree of optical polarization. These findings make IRAS 1239+333 interesting because the high polarization is an indication of significant attenuation of the line of sight. However, the soft X-ray spectrum suggests no or only minimal intrinsic absorption. This may reveal more insight into the classification of Seyfert galaxies. In order to investigate this further, IRAS 1239 has been monitored by Swift multiple times since 2005 and has been observed by XMM-Newton in 2005 and 2019. In my poster I will present preliminary analysis of this data and discuss possible interpretations. 

ABSTRACT We present results of time-series analysis of the first year of the Fairall 9 intensive disc-reverberation campaign. We used Swift and the Las Cumbres Observatory global telescope network to continuously monitor Fairall 9 from X-rays to near-infrared at a daily to subdaily cadence. The cross-correlation function between bands provides evidence for a lag spectrum consistent with the τ ∝ λ4/3 scaling expected for an optically thick, geometrically thin blackbody accretion disc. Decomposing the flux into constant and variable components, the variable component’s spectral energy distribution is slightly steeper than the standard accretion disc prediction. We find evidence at the Balmer edge in both the lag and flux spectra for an additional bound-free continuum contribution that may arise from reprocessing in the broad-line region. The inferred driving light curve suggests two distinct components, a rapidly variable (<4 d) component arising from X-ray reprocessing, and a more slowly varying (>100 d) component with an opposite lag to the reverberation signal.