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astro-ph.HE2025
Faint supernovae and hyper-runaway white-dwarfs from single He-detonation in double HeCO-white-dwarf mergers
Hila Glanz, Hagai B. Perets, Aakash Bhat
We present three-dimensional hydrodynamical simulations of mergers between low-mass hybrid HeCO white dwarfs (WDs), offering new insights into the diversity of thermonuclear transi…
astro-ph.HE2025
The origin of hypervelocity white dwarfs in the merger-disruption of He-CO white dwarfs
Hila Glanz, Hagai B. Perets, Aakash Bhat +1
Hypervelocity white dwarfs (HVWDs) are stellar remnants moving at speeds exceeding the Milky Way's escape velocity. The origins of the fastest HVWDs are enigmatic, with proposed fo…
astro-ph.HE2025
Evidence for Extended Hydrogen-Poor CSM in the Three-Peaked Light Curve of Stripped Envelope Ib Supernova
Yossef Zenati, Qinan Wang, Alexey Bobrick +40
We present multi-band ATLAS photometry for SN 2019tsf, a stripped-envelope Type Ib supernova (SESN). The SN shows a triple-peaked light curve and a late (re-)brightening, making it…