(PhysOrg.com) -- ESA's Cluster satellites have discovered that cosmic particle accelerators are more efficient than previously thought. The discovery has revealed the initial stages of acceleration for the first time, a process ...
Astronomy
Nov 17, 2011
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The discovery of a pattern of X-ray "stripes" in the remains of an exploded star may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieved by the most ...
Astronomy
Mar 24, 2011
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Physicists will soon have a better measure of the age of our galaxy, thanks to experiments described in a trio of papers appearing in the journal Physical Review C.
General Physics
Jul 15, 2010
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High-energy bursts of gamma rays typically occur far out in space, perhaps near black holes or other high-energy cosmic phenomena. So imagine scientists' surprise in the mid-1990s when they found these powerful gamma ray ...
Space Exploration
Feb 2, 2010
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This image of data from NASA's Chandra X-ray Observatory and the European Southern Observatory's Very Large Telescope shows a part of the roughly circular supernova remnant known as RCW 86.
Astronomy
Jul 1, 2009
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How do astronomers look for neutrinos? These small, massless particles whiz through the universe at very close to the speed of light. They've been studied since the 1950s and detecting them provides work for a range of very ...
Astronomy
Apr 3, 2023
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Physicists have developed new tools to help tone down the cosmic "noise" when searching for signs of particles called neutrinos in detectors located near Earth's surface. This method combines data-sifting techniques with ...
General Physics
Mar 10, 2022
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Merging galaxy clusters provide natural laboratories for astronomers to study cosmic phenomena. Igone Urdampilleta from SRON Netherlands Institute for Space Research uses the merger Abell 3376 to study how electrons rush ...
Astronomy
Nov 13, 2018
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Physicists are now celebrating the 100th anniversary of the cosmological constant. On this occasion, two papers recently published in EPJ H highlight its role in modern physics and cosmology. Although the term was first introduced ...
General Physics
Jul 11, 2018
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Every day, with little notice, the Earth is bombarded by energetic particles that shower its inhabitants in an invisible dusting of radiation, observed only by the random detector, or astronomer, or physicist duly noting ...
Plasma Physics
May 16, 2017
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