The open-source Python package thermal-bw calculates isotropic gamma-ray absorption and secondary pair spectra, with a ...

This is Kanso-san. In this third episode, we will talk about gamma rays.What is the difference between X-rays and gamma rays?

Light crossing the universe offers an unusually long test of one of physics’ most important principles. If high-energy photons traveled even slightly faster or slower than lower-energy photons, their ...

NIST-developed transition-edge sensors measured interfering X-ray emissions from uranium, plutonium and neptunium with ...

In a single experiment, physicists have measured the "excess" emission of high-energy gamma rays from more than a dozen heavy, unstable atomic nuclei. Mapping the gamma-ray emissions of so many ...

Understanding the origin, acceleration and propagation of high-energy cosmic rays has been a century-old mystery in astrophysics. Recently, joint observations from China's Einstein Probe (EP) ...