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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.   
      
                                  2022 October 2   
      
                       Supernova Cannon Expels Pulsar J0002   
       Image Credit: F. Schinzel et al. (NRAO, NSF), Canadian Galactic Plane   
                            Survey (DRAO), NASA (IRAS);   
                    Composition: Jayanne English (U. Manitoba)   
      
      Explanation: What could shoot out a neutron star like a cannon ball? A   
      supernova. About 10,000 years ago, the supernova that created the   
      nebular remnant CTB 1 not only destroyed a massive star but blasted its   
      newly formed neutron star core -- a pulsar -- out into the Milky Way   
      Galaxy. The pulsar, spinning 8.7 times a second, was discovered using   
      downloadable software Einstein@Home searching through data taken by   
      NASA's orbiting Fermi Gamma-Ray Observatory. Traveling over 1,000   
      kilometers per second, the pulsar PSR J0002+6216 (J0002 for short) has   
      already left the supernova remnant CTB 1, and is even fast enough to   
      leave our Galaxy. Pictured, the trail of the pulsar is visible   
      extending to the lower left of the supernova remnant. The featured   
      image is a combination of radio images from the VLA and DRAO radio   
      observatories, as well as data archived from NASA's orbiting IRAS   
      infrared observatory. It is well known that supernovas can act as   
      cannons, and even that pulsars can act as cannonballs -- what is not   
      known is how supernovas do it.   
      
                         Tomorrow's picture: flyby europa   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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