Science ❯ Astronomy ❯ Observational Astronomy ❯ X-ray Astronomy

X-ray Emissions

Dormant Supermassive Black Hole 'Ansky' Awakens with Record-Breaking X-Ray Flares

The black hole in galaxy SDSS1335+0728 exhibits quasiperiodic eruptions every 4.5 days, challenging existing astrophysical theories.