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arXiv · 2607.23043

For SIRs, CIRs, and Beyond: Polarization Ratio to Feature Location

Curt A. de Koning·Dusan Odstrcil·Sarah Gibson·Craig DeForest·Vic Pizzo·Christopher J. Scott
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Abstract

The Polarimeter to UNify the Corona and Heliosphere (PUNCH) mission will remotely observe solar wind transients with high signal-to-noise ratio, high-cadence, high-resolution polarized white-light images. Using different polarization states, an important PUNCH data product will be polarization ratio images. In the small-Sun limit, and using two simple line-of-sight density distributions with a finite angular width that can approximate a stream or corotating interaction region (SIR/CIR), we analytically investigate how the polarization ratio will provide three-dimensional location information and what the uncertainty in this estimated location is.

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Curt A. de Koning, Dusan Odstrcil, Sarah Gibson, Craig DeForest, Vic Pizzo, Christopher J. Scott. 2026-07-25. For SIRs, CIRs, and Beyond: Polarization Ratio to Feature Location. https://arxiv.org/abs/2607.23043

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