A "beautiful effect" predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar—a neutron star featuring a powerful magnetic field, according to a Cornell ...
Astronomy
May 4, 2023
0
65
In the early 2000s, scientists observed lightning discharge producing X-rays comprising high energy photons—the same type used for medical imaging. Researchers could recreate this phenomenon in the lab, but they could not ...
General Physics
Mar 31, 2023
0
657
Anyone who has watched steam billow up from a boiling kettle or seen ice crystals form on a wet window in winter has observed what scientists call a phase transition.
Optics & Photonics
Sep 7, 2022
1
39
X-ray detection is of great importance in diverse applications, such as radiation detection, medical diagnosis, and security inspection. A popular way to achieve X-ray detection is to integrate a photodetector with a luminescent ...
Polymers
May 17, 2022
0
39
An international research team at the Research Neutron Source Heinz Maier-Leibnitz (FRM II) of the Technical University of Munich (TUM) have developed a new imaging technology. In the future this technology could not only ...
General Physics
Nov 18, 2021
0
428
Scientists at SRON Netherlands Institute for Space Research are developing a detection technique (TES) that measures the energy of individual photons, for example in X-rays from the distant universe. Until now, it was assumed ...
Optics & Photonics
Oct 29, 2021
0
305
Scientists have gained the best view yet of the brightest explosions in the universe: A specialized observatory in Namibia has recorded the most energetic radiation and longest gamma-ray afterglow of a so-called gamma-ray ...
Astronomy
Jun 3, 2021
18
813
Femtosecond hard X-ray pulses are an important tool for unraveling structure changes of condensed matter on atomic length and time scales. A novel laser-driven X-ray source provides femtosecond copper Kα pulses at a 1 kHz ...
Optics & Photonics
Jan 7, 2021
0
48
In 1921, Albert Einstein received the Nobel Prize in physics for the discovery that light is quantized, interacting with matter as a stream of particles called photons. Since these early days of quantum mechanics, physicists ...
Optics & Photonics
Sep 25, 2020
1
139
Giant elliptical galaxies, the oldest known large galactic structures in the universe, have no spiral arms and little or no current star formation activity, but their central supermassive black holes are often active galactic ...
Astronomy
Aug 21, 2020
0
102
