It's not easy to imagine how high the frequency of a high-energy ... one cycle, a gamma-ray wave traveling at the speed of light will travel only the width of a proton, a tiny particle found ...

This time, however, the outstanding quality of the measured particle energy spectrum up to the highest ... nuclei produce charged particles and gamma radiation with energies far above those ...

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The Crab Nebula is the remnant of a supernova which was observed almost 1000 years ago. Although it corresponds to one of the most studied celestial objects, its extension in very high energy ...

The origin of highest-energy gamma radiation in the nearby radio galaxy Centaurus A could now be localised for the first time: It extends out into its jet, a strongly bunched matter flow. This has now ...