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astro-ph.HE2026
Radio Constraints on the Circumstellar Environment of the Type IIb Supernova SN 2024iss
Yuhei Iwata, Tomoki Matsuoka, Masanori Akimoto +6
Type~IIb supernovae exhibit diverse progenitor properties, and radio observations offer a unique probe of their mass-loss histories shortly before the explosion. We present Japanes…
astro-ph.CO2026
Reflection polarization of close binaries as a probe of axion dark matter birefringence
Tomoki Matsuoka, Kimihiro Nomura, Hidetoshi Omiya
We propose close binary polarimetry as a probe of birefringence induced by ultralight axion dark matter. In a close binary, reflection or scattering can generate a small linear pol…