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astro-ph.HE2025
Effects of Dissipation Physics on High-frequency Quasi-periodic Oscillations in Black Hole X-ray Binaries
Theodore Dezen, Sergio Gomez, Kathryn Anawalt
We numerically investigate the effects of black hole spin and local dissipation profiles on high-frequency quasi-periodic oscillation (HFQPO) observed in black hole X-ray binaries…
astro-ph.HE2025
Evidence for an Instability-Induced Binary Merger in the Double-Peaked, Helium-Rich Type IIn Supernova 2023zkd
A. Gagliano, V. A. Villar, T. Matsumoto +42
We present ultraviolet to infrared observations of the extraordinary Type IIn supernova 2023zkd (SN 2023zkd). Photometrically, it exhibits persistent and luminous precursor emissio…