It's not easy to imagine how high the frequency of a high-energy gamma ray is. During the time it takes for its wave to go through one cycle, a gamma-ray wave traveling at the speed of light will ...

The cosmic pinwheel that astronomers feared could one day shower Earth with lethal gamma rays may not be as dangerous as once ...

The tour ends with gamma rays, the potentially deadly radiation ... To find out more about the spectrum, see the links in Resources. To convert metric measurements discussed in this feature ...

For that, you need something like this gamma-ray spectroscope ... showing different spectra for each. [mihai.cuciuc] took inspiration for the Pomelo from this DIY spectrometer as well as the ...

The U.S. Naval Research Laboratory (NRL), in partnership with NASA's Marshall Space Flight Center (MSFC), has developed ...

More information: Federica Giacchino et al, Fermi-LAT Discovery of a Gamma-ray Outburst from the Peculiar Compact Steep Spectrum Radiogalaxy 3C 216, arXiv (2025). DOI: 10.48550/arxiv.2501.00582 ...

Decades of W.M. Keck Observatory research on the famed Wolf-Rayet 104 “pinwheel star” system has taken a new turn, revealing more mystery but reducing concerns about its potential as the “Death Star.” ...

Another unusual feature of Markarian 421 is that it is bright at both the low and high ends of the energy spectrum, but emits only a weak signal in certain regions of gamma rays. "This particular ...

Gamma rays are the most energizing waves in the electromagnetic spectrum. They are produced by some of the most energetic objects in the universe—including black holes, neutron stars ...

Figure caption, Each region of the electromagnetic (EM) spectrum has a range of wavelengths associated with it. Radio waves have the longest wavelengths and gamma rays have the shortest wavelengths.

These two factors limit the number of isotopes that can be used successfully for Mössbauer spectroscopy. The most used is 57 Fe, which has both a very low energy gamma-ray and long-lived excited state ...

Based on their optical emission properties, astronomers divide blazars into two classes: flat-spectrum radio quasars ... associated with the gamma-ray source 4FGL J0730.3-1141.