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Auger Observatory closes in on mystery, links highest-energy cosmic rays with violent black holes
11-08-2007 · EurekAlert!The Pierre Auger Collaboration announced that active galactic nuclei are the most likely candidate for the source of the highest-energy cosmic rays that hit Earth. Using the Pierre Auger Observatory in Argentina, the team of scientists found that the sources of the highest-energy particles are not distributed uniformly across the sky. Instead, the Auger results link the origins of these mysterious particles to the locations of nearby galaxies that have active nuclei in their centers.
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Similar news on "Auger Observatory closes in on mystery, links highest-energy cosmic rays with violent black holes":
- Auger Observatory links highest-energy cosmic rays with violent black holes
11-08-2007 · EurekAlert!
Scientists of the Pierre Auger Collaboration, which includes New York University physics professor Glennys R. Farrar, have concluded that active galactic nuclei are the most likely candidate for the source of the highest-energy cosmic rays that hit Earth. Using the Pierre Auger Observatory in Argentina, a team of scientists from 17 countries found that the sources of the highest-energy particles are nearby galaxies that have active nuclei in their centers.
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- Michigan Tech helps solve mystery of cosmic rays
11-08-2007 · EurekAlert!
Using data-gathering equipment designed and tested at Michigan Technological University, scientists from 17 countries have identified Active Galactic Nuclei containing massive black holes as the most likely source of the highest-energy cosmic rays.
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- Cosmic ray mystery solved?
11-08-2007 · EurekAlert!
The most energetic particles in the universe -- ultrahigh-energy cosmic rays -- likely come from supermassive black holes in the hearts of nearby active galaxies, says a study by scientists from nearly 90 research institutions worldwide, including the University of Utah.
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- Mysterious cosmic rays linked to galactic powerhouses
11-08-2007 · EurekAlert!
The sprawling Auger Cosmic Ray Observatory in South America has produced its first major discovery while still under construction. The international Auger collaboration has traced the rain of high-energy cosmic rays that continually pelts the Earth to the cores of nearby galaxies, which emit prodigious quantities of energy.
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- Ray Tracing: Energetic cosmic rays linked to giant black holes
11-10-2007 · Science News Online
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- Distant black holes may be source of high-energy cosmic rays
11-09-2007 · EurekAlert!
Breakthrough astrophysics research may have established the hitherto mysterious source of exceptionally high-energy cosmic ray emissions, according to recently published research that culminates a project developed by a scientist at the US Department of Energy's Argonne National Laboratory.
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- A new mechanism for producing cosmic gamma rays from starlight is proposed
03-19-2007 · EurekAlert!
In 2002, when astronomers first detected cosmic gamma rays coming from the constellation Cygnus, they were surprised and perplexed. The region lacked the extreme electromagnetic fields that they thought were required to produce such energetic rays. But now a team of theoretical physicists propose a mechanism that can explain this mystery and may also help account for another type of cosmic ray, the high-energy nuclei that rain down on Earth in the billions.
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- Neutron stars join the black hole jet set
06-27-2007 · EurekAlert!
NASA's Chandra X-ray Observatory has revealed an X-ray jet blasting away from a neutron star in a binary system. This discovery may help astronomers understand how neutron stars as well as black holes can generate powerful beams of relativistic particles.
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- Carnegie Mellon University-led team conducts most detailed cosmological simulation to date
06-28-2007 · EurekAlert!
Using a new computer model of galaxy formation, researchers have shown that growing black holes release a blast of energy that fundamentally regulates galaxy evolution and black hole growth itself. The model explains for the first time observed phenomena and promises to deliver deeper insights into our understanding of galaxy formation and the role of black holes throughout cosmic history. The results were generated by an international team of investigators.
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- Unusual supernovae may reveal intermediate-mass black holes in globular clusters
01-29-2008 · EurekAlert!
A strange and violent fate awaits a white dwarf star that wanders too close to a moderately massive black hole. According to a new study, the black hole's gravitational pull on the white dwarf would cause tidal forces sufficient to disrupt the stellar remnant and reignite nuclear burning in it, giving rise to a supernova explosion with an unusual appearance.
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