Black Holes
Rogue black hole produces fastest radio signals outside galaxy center
Astronomers have observed a black hole tearing apart a star far from its galaxy's center, producing the fastest-changing radio signals ever recorded from such an event. Named AT 2024tvd, this tidal disruption event reveals supermassive black holes can exist and remain active in unexpected locations. The discovery, led by an international team, suggests complex, delayed energy releases from black holes.
Black hole falls into star and consumes it from inside
Astronomers have observed a rare event where a black hole fell into a companion star and ate its way out, producing the longest-known gamma-ray burst. The burst, lasting about seven hours, was detected 9 billion light-years from Earth. This unusual scenario explains the extended duration of the phenomenon.
Galaxies eject matter more violently than expected
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A new analysis reveals that supermassive black holes in galaxies fling out baryonic matter far more aggressively than previously thought, explaining the long-missing cosmic gas. Researchers at the University of California, Berkeley combined observations of the cosmic microwave background to map how this ordinary matter diverges from dark matter. The findings highlight the powerful role of black holes in shaping the universe's mass distribution.
Virtual telescope uncovers jet in galaxy OJ 287
An international team of astronomers has captured the most detailed image yet of the core of the distant galaxy OJ 287, revealing a sharply curved plasma jet. The observation, made using a virtual telescope spanning multiple Earth diameters, supports the presence of two merging supermassive black holes at its heart. This breakthrough provides new insights into the extreme energies and structures around such cosmic phenomena.