TY - RPRT TI - The Challenge of Observing Patchy Reionization with CMB Optical-Depth Fluctuations AU - Takoudes, Nick [Chicago U., Astron. Astrophys. Ctr.] AU - Zhu, Hanjue [Princeton, Inst. Advanced Study; Chicago U., Astron. Astrophys. Ctr.] (ORCID:0000000308610922) AU - Gnedin, Nickolay Y. [Fermilab; Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.] (ORCID:0000000159254580) PY - 2026 UR - https://www.osti.gov/biblio/3683965 ID - 3683965 ER -