Star torn apart in galaxy collision
131A remarkable cosmic event was recently recorded: a star was completely torn apart by a supermassive black hole during the merger of two galaxies. This phenomenon, known as a tidal disruption event (TDE), occurs when a star gets too close to a black hole and is torn apart by the extreme gravitational forces.
The event, called AT 2022wtn, occurred in a galaxy about 700 million light-years from Earth. The star was captured by a black hole with a mass equivalent to a million Suns, being partially devoured and forming an accretion disk around the black hole. In addition, a large amount of gas was expelled, creating an expanding spherical bubble and generating a strong emission of radio waves.
These events are extremely bright, releasing more light than all the stars in the galaxy where they occur, which has caught the attention of scientists. The phenomenon was initially detected by the Zwicky Transient Facility (ZTF) and later studied in several light bands, including radio waves, infrared and X-rays.
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