Yuto Minami | Yuto Minami's Web Page /author/yuto-minami/ Yuto Minami Source Themes Academic (https://sourcethemes.com/academic/)en-usThu, 30 Apr 2026 00:00:00 +0000 /images/icon_hu0b7a4cb9992c9ac0e91bd28ffd38dd00_9727_512x512_fill_lanczos_center_3.png Yuto Minami /author/yuto-minami/ Methodological note on patchy reionization and anisotropic cosmic birefringence /post/patchy-reionization-anisotropic-cosmic-birefringence/ Thu, 30 Apr 2026 00:00:00 +0000 /post/patchy-reionization-anisotropic-cosmic-birefringence/ <p>I wrote a methodological note on how to interpret anisotropic cosmic birefringence constraints when an effective contribution from patchy reionization is present.</p> <p>The note emphasizes that current anisotropic cosmic birefringence constraints should be read as constraints on the total birefringence power, rather than automatically as limits on a single ALP-induced fluctuation component. It also documents why finite-width visibility averaging is essential: thin-shell estimates can make the patchy contribution look more important than it remains after a more physical treatment.</p> <p>The full note is available on GitHub:</p> <p> <a href="https://github.com/YutoMinami/patchy_reionization_-anisotropic_cosmic_birefringence/blob/main/METHODOLOGICAL_NOTE.md" target="_blank" rel="noopener">A Methodological Note on Interpreting Anisotropic Cosmic Birefringence Constraints in the Presence of Patchy Reionization</a></p> Extended delta-map: A map-based foreground removal method for CMB polarization observations /publication/minami-2022zmq/ Sun, 01 Jan 2023 00:00:00 +0000 /publication/minami-2022zmq/ Status of the search for $^48$ Ca double beta decay with CANDLES /publication/minami-2023gsb/ Sun, 01 Jan 2023 00:00:00 +0000 /publication/minami-2023gsb/ Can primordial parity violation explain the observed cosmic birefringence? /publication/fujita-2022qlk/ Sat, 01 Jan 2022 00:00:00 +0000 /publication/fujita-2022qlk/ Probing axionlike particles via cosmic microwave background polarization /publication/fujita-minami-2020/ Fri, 01 Jan 2021 00:00:00 +0000 /publication/fujita-minami-2020/ Status of $^48$Ca double beta decay search in CANDLES /publication/minami-2021whn/ Fri, 01 Jan 2021 00:00:00 +0000 /publication/minami-2021whn/ New Extraction of the Cosmic Birefringence from the Planck 2018 Polarization Data /publication/minami-2020-odp/ Tue, 24 Nov 2020 00:00:00 +0000 /publication/minami-2020-odp/ Determination of miscalibrated polarization angles from observed cosmic microwave background and foreground $EB$ power spectra: Application to partial-sky observation /publication/minami-2020-xfg/ Mon, 05 Oct 2020 22:09:14 +0000 /publication/minami-2020-xfg/ Simultaneous determination of the cosmic birefringence and miscalibrated polarization angles II: Including cross frequency spectra /publication/minami-komatsu-2020/ Wed, 01 Jan 2020 00:00:00 +0000 /publication/minami-komatsu-2020/ Simultaneous determination of the cosmic birefringence and miscalibrated polarization angles from CMB experiments /publication/minami-2019-ruj/ Tue, 01 Jan 2019 00:00:00 +0000 /publication/minami-2019-ruj/