A traveling black hole stalking the cosmos for stellar prey recently revealed itself to NASA telescopes in a tidal disruption event (TDE), shredding and swallowing a star in a radioactive burst.
With its brilliant flash, the TDE AT2024tvd lit up several observatories, including NASA’s Hubble Space Telescope, Chandra X-Ray Observatory, and the NRAO Very Large Array. The TDE event took place 600 million light-years from Earth, allowing astronomers a new glimpse at black hole physics to be published in a future issue of The Astrophysical Journal Letters.
Initially, as the marauding black hole moved through the universe, it was detectable only through gravitational lensing—an effect caused by the black hole’s gravity distorting visible light in a way astronomers could observe.
Eventually, as the black hole encounters a star, its immense gravity pulls the stellar object inward. That intense gravitational force overwhelms the star, spaghettifying it, with some of the remnants forming a bright accretion disc around the black hole’s edge and a stream of electromagnetic radiation pouring out. Shocks and outflows from the accretion disc generate extreme temperatures, producing ultraviolet and visible light emissions.
Out of Center
Black holes are typically found at the centers of their galaxies, but this roaming void in space was the first observed…more
Source thedebrief.org
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