Kavli Affiliate: Roger W. Romani
| First 5 Authors: Jack T. Dinsmore, Jack T. Dinsmore, , ,
| Summary:
As the Imaging X-ray Polarimetry Explorer (IXPE) measures increasingly faint
sources, the need for precise polarimetry extraction becomes paramount. In
addition to previously described neural-net (NN) weights, we introduce here
point-spread function weights and particle background weights, which can be
critical for faint sources. In some cases these can be augmented by time/phase
and energy weights. We provide a publicly available analysis tool to
incorporate these new weights, validate our method on simulated data, and test
it on archival IXPE observations. Together these weights decrease the area of
the polarization uncertainty contour by a factor of two compared to baseline
IXPE analysis and will be essential for background-limited IXPE observations.
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