Blazar gamma ray activity, Fermi Gamma-ray Space Telescope (FGST) image. This image shows the sky in gamma rays with energies greater than 1 billion e

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Blazar gamma ray activity, Fermi Gamma-ray Space Telescope (FGST) image. This image shows the sky in gamma rays with energies greater than 1 billion electron volts, with the black-hole-powered galaxy TXS 0506+056 at centre. This galaxy (known as a blazar) is located billion light years from Earth in the constellation of Orion. The image shows the number of gamma rays detected for four months before and after the detection of a high-energy neutrino by the IceCube Neutrino Observatory on 22 September 2017. Brighter colours indicate greater numbers of gamma rays. At the time of the detection, TXS 0506+056 was brighter in gamma rays than it had been in the previous decade. The bright spot at top left is the supernova remnant IC 443. The bright spot to its right is the supernova remnant called the Crab Nebula.

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Size: 2954px × 2960px
Photo credit: © NASA/DOE/FERMI LAT COLLABORATION/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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