Security officials are tasked with preventing criminals from smuggling dangerous materials into a country, and detecting nuclear substances has been difficult and costly. Now Northwestern University researchers have developed ...
Optics & Photonics
Dec 7, 2020
2
68
After more than two decades, an international research team has identified a galactic mystery source of gamma rays: a heavy neutron star with a very low mass companion orbiting it.
Astronomy
Oct 22, 2020
0
236
Using the Lijiang Observatory, astronomers from the Chinese Academy of Sciences (CAS) have inspected a gamma-ray blazar known as S5 0716+714. The observations provided important insights into the spectral behavior of this ...
The detection more than a decade ago by the Fermi Gamma Ray Space Telescope of an excess of high-energy radiation in the center of the Milky Way convinced some physicists that they were seeing evidence of the annihilation ...
Astronomy
Aug 26, 2020
58
384
Using the Parkes telescope, an international team of astronomers has performed a monitoring campaign of a gamma-ray millisecond pulsar (MSP) known as PSR J2039−5617. The observations detected radio pulsations from this ...
Using data from space observatories and ground-based telescopes, astronomers have investigated variability of a blazar known as 3C 273. The new study, presented in a paper published July 6 on the arXiv pre-print server, sheds ...
Using three NASA space observatories, astronomers have conducted a multiwavelength study of emission from a blazar known as 1ES 1218+304. Results of the investigation, presented in a paper published June 29 on arXiv.org, ...
The origin of high-energy cosmic neutrinos observed by the IceCube Neutrino Observatory, whose detector is buried deep in the Antarctic ice, is an enigma that has perplexed physicists and astronomers. A new model could help ...
Astronomy
Jul 1, 2020
4
7370
An international team of astronomers has detected a teraelectronvolt (TeV) emission from a gamma-ray burst designated GRB 190114C. The discovery could improve the understanding of very high energy (VHE) sources in the universe. ...
Laser-wakefield accelerators have led to the development of compact, ultrashort X-ray or gamma-ray sources to deliver peak brilliance, similar to conventional synchrotron sources. However, such sources are withheld by low ...
