Overview
- The flare was first flagged by the Zwicky Transient Facility in November 2025 after an AI classifier identified an unusual brightening among hundreds of thousands of nightly alerts.
- Ground‑based spectroscopy with the SOAR telescope and space data from NASA’s Swift Observatory showed spectral and ultraviolet signatures consistent with a tidal disruption event, ruling out supernova and active nucleus explanations.
- A paper published Monday, July 27, confirms the event TDE 2025abcr was caused by a roughly one million‑solar‑mass black hole about 30,000 light‑years from its host galaxy’s center and roughly 750 million light‑years from Earth.
- Swift measured the ultraviolet peak that briefly outshone the host galaxy and a temperature near 30,000 °C, but Swift’s pointed science observations are temporarily suspended while the spacecraft awaits an orbit boost.
- The result supports theories that mergers or three‑body interactions can displace supermassive black holes and offers a proven search method teams plan to apply to the Vera C. Rubin Observatory and the Nancy Grace Roman Space Telescope to build larger samples.