Clouds Circle Black Holes

20 February 2014 4:45 pm
Clouds Circle Black Holes


Once thought to be fog, astronomers are discovering that clouds circle supermassive black holes. After sifting through the last 16 years of records collected by a NASA satellite that measured x-rays emitted from black holes, researchers noticed multiple instances when x-ray signals the satellite logged dimmed for periods of time, they report in the Monthly Notices of the Royal Astronomical Society. The dimming is believed to be caused by a cloud passing and interrupting the signal between the black hole and the satellite.

See more Signal/Noise.