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• Röntgenphotographie der Gegend um Sagittarius A*: vom Schwarzen Loch angestrahlte Gasnebel

• Die Röntgenstrahlun aus den Gasnebeln wird von Eisen-Atomen erzeugt: The clouds of gas featured in the image are glowing by a process called fluorescence. Iron in these clouds has been bombarded either by X-rays from a source that had an outburst in the past or by very energetic electrons. The electrons or photons hit the iron atoms, knocking out electrons close to the nucleus, causing electrons further out to fill the hole, emitting X-rays in the process.
  

• Sagittarius A*. This image was taken with NASA's Chandra X-Ray Observatory. Ellipses indicate light echoes. Full-field is 12.5 arcmin across.
  

Source

• Original source: https://chandra.harvard.edu/photo/2007/gcle/ [Mit längerem Erkärtext]
  

• Created: July 23rd, 2014
  

• Author: NASA
  

License

Warranty

• No guarantee can be given as to the correctness of facts implied or explicitly stated.
  

• Usage is completey at your own risk. 💣
  

Originalseite

• Das Bild ist Teil eines online-Lexikons.
  

• Rhetos Lernlexikon Mathematik, Aachen:
  

• Siehe unter 👉 Sagittarius A