Cygnus A - The closest powerful radio galaxy. One of the - TopicsExpress



          

Cygnus A - The closest powerful radio galaxy. One of the brightest celestial sources visible to radio telescopes, at 600 million light-years distant Cygnus A is the closest powerful radio galaxy. Radio emission ( red) extends to either side along the same axis for nearly 300,000 light-years powered by jets of relativistic particles emanating from the galaxys central supermassive black hole. Hot spots likely mark the ends of the jets impacting surrounding cool, dense material. Confined to yellow hues, optical wavelength data of the galaxy from Hubble and the surrounding field in the Digital Sky Survey complete a remarkable multiwavelength view. #astronomy #CygnusA #Radio emission
Posted on: Sat, 24 Jan 2015 13:44:25 +0000

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