Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA’s orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat ...
Spanish astronomers have conducted a near-infrared study of an ultra-high energy gamma-ray source designated LHAASO ...
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A photon’s transit from the center of the sun outward into space takes tens of thousands of years, but it requires only a few minutes to reach Earth once it emerges. An airplane is juxtaposed with the ...
The HESS international collaboration, to which CNRS and CEA contribute, has published the results of fifteen years of gamma ray observations of the Milky Way. Its telescopes installed in Namibia have ...
Schematics of the all-optical nonlinear Compton scattering experiment showing laser-driven electron acceleration, electron-laser collision, and Compton scattering to produce gamma rays. In a ...
Astronomers have detected the highest-energy light ever seen, streaming in from near the center of the Milky Way. Hundreds of gamma ray signals were detected with ultra-high energies, with the most ...
Osaka, Japan – Lightning is a phenomenon that has fascinated humanity since time immemorial, providing a stark example of the power and unpredictability of the natural world. Although the study of ...
This tutorial explains how positron emission tomography (PET) imaging systems generate 3-D medical images. The article details how the PET system detects gamma-rays produced when injected doped sugars ...
The Crab nebula is blasting high-energy gamma rays at us. Researchers using the Large High Altitude Air Shower Observatory (LHAASO) in China have found the second highest-energy gamma ray, or photon, ...
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