Chinese research team discovers the most distant non-jetted tidal disruption event of a star to date
WFST discovers high-redshift tidal disruption event AT2025wet, setting a new record for the most distant one Revealing new clues about black hole accretion and radiation mechanisms, click to learn about a new sample from the depths of the universe
The science team of the Department of Astronomy at the University of Science and Technology of China and the Mozi Survey Telescope (WFST) recently discovered an extremely rare highredshift tidal disruption event of a star, AT2025wet. The event is about 8 billion lightyears from Earth and is currently the most distant known nonjetdominated thermalemission tidal disruption event.
The research team said that this discovery will help deepen people’s understanding of the black hole accretion process and the radiation mechanism of tidal disruption events, and also provide a new observational sample for studying dormant supermassive black holes deep in the universe.
The relevant findings have been published in the international astronomy journal The Astrophysical Journal Letters. The study also pointed out that the opticalultraviolet spectral energy distribution of AT2025wet is closer to a powerlaw distribution, suggesting that its true energy output may be higher than estimates based only on optical data. This provides an important clue for explaining the longstanding “missing energy” problem in tidal disruption events.