Copyright:
原文:
Celebrating astronomy in this International Year of Light, the detailed image reveals spectacular active galaxy Cygnus A in light across the electromagnetic spectrum. Incorporating X-ray data ( blue) from the orbiting Chandra Observatory, Cygnus A is seen to be a prodigious source of high energy x-rays. But it is actually more famous at the low energy end of the electromagnetic spectrum. 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 galaxy’s 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.
中文翻譯:
在這個國際光年，我們慶祝天文學，這幅詳盡的圖像展示了活躍的星系 Cygnus A 在電磁波譜中的壯麗畫面。這裡的藍色數據來自於軌道上的 Chandra Observatory，顯示 Cygnus A 是高能 X 射線的巨大來源。然而，它在電磁波譜的低能量端更為人知。作為最亮的天體源之一，Cygnus A 是離我們最近的強大無線電星系，距離我們約有 6 億光年。無線電輻射（紅色）沿著同一軸向兩側延伸，長達近 30 萬光年，這是由自星系中心超大質量黑洞發出的相對論性粒子噴流所驅動。熱點可能標示著噴流的末端，與周圍的冷密材料碰撞。黃色的光譜數據來自 Hubble 和數位天空調查，讓我們完整了解這個多波段的壯麗景觀。
#CygnusA #Astronomy #InternationalYearOfLight #ChandraObservatory #XRayAstronomy #RadioGalaxy #Space #Astrophysics #CosmicJourney #HubbleSpaceTelescope #AstroPhotography #MultiwavelengthObservation
來源:NASA每日圖片
