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                           Astronomy Picture of the Day   
      
       Discover the cosmos! Each day a different image or photograph of our   
         fascinating universe is featured, along with a brief explanation   
                       written by a professional astronomer.   
      
                                   2024 April 1   
        A donut-shaped orange figure is seen with lines extending along the   
        emission in a swirling pattern. Please see the explanation for more   
                               detailed information.   
      
          Swirling Magnetic Field around Our Galaxy's Central Black Hole   
                          Image Credit: EHT Collaboration   
      
      Explanation: What's happening to the big black hole in the center of   
      our galaxy? It is sucking in matter from a swirling disk -- a disk that   
      is magnetized, it has now been confirmed. Specifically, the black   
      hole's accretion disk has recently been seen to emit polarized light,   
      radiation frequently associated with a magnetized source. Pictured here   
      is a close-up of Sgr A*, our Galaxy's central black hole, taken by   
      radio telescopes around the world participating in the Event Horizon   
      Telescope (EHT) Collaboration. Superposed are illustrative curved lines   
      indicating polarized light likely emitted from swirling magnetized gas   
      that will soon fall into the 4+ million mass central black hole. The   
      central part of this image is likely dark because little light-emitting   
      gas is visible between us and the dark event horizon of the black hole.   
      Continued EHT monitoring of this and M87's central black hole may yield   
      new clues about the gravity of black holes and how infalling matter   
      creates disks and jets.   
      
           NASA Predicts: Moon to Get in Way of Sun Tomorrow's picture:   
                                   corona-vision   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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