Observations from high-flying aircraft revealed that thunderclouds act as natural particle accelerators, emitting energetic ...

and thus are a good target for the Gamma Ray Large Area Space Telescope (GLAST). As the blazars trace the large-scale structure of the Universe, one may observe spatial clustering of blazars. We ...

Gamma rays are a form of electromagnetic radiation ... wavelengths and the highest frequencies in the electromagnetic spectrum. These rays are produced by the hottest and most energetic objects ...

Understanding the origin of heavy elements on the periodic table is one of the most challenging open problems in all of ...

Before this research, scientists didn't recognize that some nearby gamma-ray bursts are also part of this massive structure. The finding is extraordinary because the Hercules-Corona Borealis Great ...

The wave-length and quantum energy of many of the stronger lines in the complicated gamma ray spectrum have been determined by different methods, with concordant results. It has been difficult to ...

[Dosimeter] - Ultrafast sensitive scintillation detector [Spectrometry] - Spectrum analyzer and isotope identifier 9-10% (FWHM) for Cs-137 [Radiation mapping] - Create tracks with Google Maps or ...

For over a decade, a star system on the verge of unleashing a deadly gamma ray burst appeared to have ... swirling dust that glows in the infrared spectrum, the astronomers found.

And it did so right in the middle of an odd sort of telescope that was partway through construction. In a paper published in ...

This book summarizes the science to be carried out by the upcoming Cherenkov Telescope Array, a major ground-based gamma-ray observatory that will be constructed over the next six to eight years. The ...