Neutron detectors and sources play critical roles in national defense, homeland security, nuclear power plant control, radiation medicine, petroleum exploration, materials science, industrial imaging, and a host of other ...
General Physics
Jan 18, 2017
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Researchers from the University of Amsterdam's (UvA) GRAPPA Center of Excellence have just published the most precise analysis of the fluctuations in the gamma-ray background to date. By making use of more than six years ...
Astronomy
Dec 19, 2016
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Blazars are galaxies whose central, supermassive black holes are accreting material from surrounding regions. Although black hole accretion happens in many galaxies and situations, in the case of a blazar the infalling material ...
Astronomy
Jun 6, 2016
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(Phys.org)—A trio of researchers with The University of Texas has found a possible way to create gamma ray beams by firing a laser beam at a piece of plastic. In their paper published in Physical Review Letters, David Stark, ...
Gamma-ray pulsars are remnants of explosions that end the lives of massive stars. They are highly-magnetized and rapidly rotating compact neutron stars. Like a cosmic lighthouse they emit gamma-ray photons in a characteristic ...
Astronomy
Aug 7, 2015
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(Phys.org) —Where in powerful jets of distant active galaxies—the mightiest and most energetic objects known—are the violent outbursts of high energy gamma-ray emission produced? Very close to the central supermassive ...
Astronomy
May 23, 2014
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(Phys.org) —A team of researchers based at Texas A&M University with affiliations with several Russian Universities has come up with a way to create pulses of gamma rays that have precise shapes and timing, all from a single ...
Researchers from the Laboratoire Leprince-Ringuet (CNRS/École Polytechnique) have carried out the first measurement of the intensity of the diffuse extragalactic background light in the nearby Universe, a fog of photons ...
Astronomy
Jan 20, 2013
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Spacetime may be less like foamy quantum beer and more like smooth Einsteinian whiskey, according to research led by physicist Robert Nemiroff of Michigan Technological University being presented today at the 221st American ...
Astronomy
Jan 9, 2013
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Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish may stoke the ...
General Physics
Oct 28, 2009
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