Daily non-political popular news in brief.

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.

Keywords: distant, black, holes, source, high-energy, cosmic, rays, hole, high, energy, ray

« Previous | Next »

Similar news on "Distant black holes may be source of high-energy cosmic rays":

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.
Similar news · Read more »
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.
Similar news · Read more »
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.
Similar news · Read more »
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.
Similar news · Read more »
Ray Tracing: Energetic cosmic rays linked to giant black holes
11-10-2007 · Science News Online
New observations suggest that ultrahigh-energy cosmic rays originate in the cores of nearby galaxies harboring supermassive black holes.
Similar news · Read more »
Black hole survey
11-18-2006 · Science News Online
Scanning the sky for high-energy X rays, a NASA satellite found more than 200 supermassive black holes within 400 million light-years of Earth.
Similar news · Read more »
New X-ray source in nearby galaxy spawns mystery
01-09-2008 · EurekAlert!
Astronomers studying a nearby galaxy have spied a rare type of star system -- one that contains a black hole that suddenly began glowing brightly with X-rays. Though this type of star system is supposed to be rare, it's the second such system discovered in that galaxy, called Centaurus A. The discovery suggests that astronomers have more to learn about the lives and deaths of massive stars in galaxies such as our own.
Similar news · Read more »
Milky Way black hole may be a colossal 'particle accelerator'
02-27-2007 · EurekAlert!
The black hole at the center of our Milky Way could be working like a cosmic particle accelerator, revving up protons that smash at incredible speeds into lower energy protons and creating high-energy gamma rays, University of Arizona astrophysicists say.
Similar news · Read more »
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.
Similar news · Read more »
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.
Similar news · Read more »