Handling the Background in IXPE Polarimetric Data

Abstract Imaging X-ray Polarimetry Explorer (IXPE) is a Small mission by NASA and Agenzia Spaziale Italiana, launched on 2021 December 9, dedicated to investigating polarimetry allowing angular-, time-, energy-resolved observations in the 2–8 keV energy band. IXPE science observation phase since 2022 January; it comprised of three identical telescopes with grazing-incidence mirrors, each one having focal plane gas pixel detector. In this paper, we present possible guideline obtain an optimal background selection polarimetric analysis, rejection strategy remove instrumental background. This work based analysis observations, aiming improve as much sensitivity. particular, developed strategies have been applied case study 4U 0142+61 magnetar.