![NASA's Neil Gehrels Swift Observatory imaged rings of X-ray light centered on V404 Cygni, a binary system containing an erupting black hole (dot at center), with its X-ray Telescope from June 30 to July 4, 2015. The dark lines running diagonally through the image are artifacts of the imaging system.](https://science.nasa.gov/wp-content/uploads/2023/09/rings-1080-gif-detail.gif?w=4096&format=png)
X-ray Echoes Create Black Hole Bull’s-eye
NASA's Neil Gehrels Swift Observatory imaged rings of X-ray light centered on V404 Cygni, a binary system containing an erupting black hole (dot at center), with its X-ray Telescope from June 30 to July 4, 2015. The dark lines running diagonally through the image are artifacts of the imaging system.
Credits: Andrew Beardmore (Univ. of Leicester) and NASA/Swift
Image CreditAndrew Beardmore (Univ. of Leicester) and NASA/Swift
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