Remove this ad

Gamma rays

Bright Blazar’s Emission Defies Explanations

April 18, 2013

Want to stay on top of all the space news? Follow @universetoday on Twitter When it comes to sheer wattage, blazars definitely rule. As the brightest of active galactic nuclei, these sources of extreme high-energy gamma rays are usually associated with relativistic jets of material spewing into space and enabled by matter falling into a [...]

Read the full article →

Black Holes, Fermi Bubbles and the Milky Way

March 6, 2013

Deep at the heart of our galaxy lurks a black hole. This isn’t exciting news, but neither is it a very exciting place. Or is it? While all might be quiet on the western front now, there may be evidence that our galactic center was once home to some pretty impressive activity – activity which [...]

Read the full article →

Watch Live Webcast: Cosmic Rays and Exploding Stars

February 28, 2013

Scientists have know about cosmic rays for a century. But these high-energy subatomic particles, which stream through space at nearly the speed of light and crash into the Earth’s upper atmosphere, have been mostly a mystery. The primary reason: researchers have been unable to tell where they come from, or how they’re born. But new [...]

Read the full article →

Supernovae Seed Universe With Cosmic Rays

February 15, 2013

In a wave of media releases, the latest studies performed by NASA’s Fermi Gamma-ray Space Telescope are lighting up the world of particle astrophysics with the news of how supernovae could be the progenitor of cosmic rays. These subatomic particles are mainly protons, cruising along through space at nearly the speed of light. The rest [...]

Read the full article →

Cygnus X – A Cosmic-ray Cocoon

November 29, 2011

Situated about 4,500 light-years away in the constellation of Cygnus is a veritable star factory called Cygnus X… one estimated to have enough “raw materials” to create as many as two million suns. Caught in the womb are stellar clusters and OB associations. Of particular interest is one labeled Cygnus OB2 which is home to [...]

Read the full article →
Remove this ad

← Previous Entries