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Author

E. Ferreira

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Preprint Sep 2026

Tangled $\tau$: Planck CMB Constraints on Flash Reionization

Recent cosmological tensions have renewed interest in the role of reionization in parameter inference, and flash reionization has been proposed as a transient high-redshift ionization episode that can increase the Thomson optical depth while remaining compatible with CMB polarization data. In this work, we present the...

Param Upadhyay, E. Ferreira, Evan McDonough · 1 citation

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