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China’s Tianguan satellite detected a rare X-ray burst from a likely intermediate-mass black hole disrupting a white dwarf.
China's Tianguan satellite detected a rare X-ray burst, EP250702a, on July 2, 2025, likely from an intermediate-mass black hole tearing apart a white dwarf star.
The event’s extreme brightness, short duration, and soft X-ray afterglow differ from known supernovae or typical tidal disruptions, suggesting a jetted disruption of a dense stellar remnant.
Only intermediate-mass black holes—hundreds to hundreds of thousands of times the Sun’s mass—can generate the necessary tidal forces.
This marks the first potential observation of such an event, showcasing the satellite’s ability to capture unpredictable cosmic phenomena and highlighting China’s growing role in space-based astronomy.
El satélite Tianguan de China detectó una rara explosión de rayos X de un agujero negro de masa intermedia que perturba una enana blanca.