Blazars are massive black holes sending out particle jets at close to the speed of light. Stupendously fast, intense bursts of highly energetic γ-rays indicate that the blazar environment is even more extreme than was thought.
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R. WAGNER/ MPI PHYSIK
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Weekes, T. Photons from a hotter hell. Nature 448, 760–761 (2007). https://doi.org/10.1038/448760a
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DOI: https://doi.org/10.1038/448760a
