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  1. ; (, volume 245 of American Astronomical Society Meeting Abstracts, 252.14, January 2025)
    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. 
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    Free, publicly-accessible full text available January 3, 2026