Writer JR Minkel says, "A new study casts doubt on a long-standing belief about the power behind gamma-ray bursts, the most energetic explosions in the universe. Researchers have found that short gamma-ray bursts—those that last a couple of seconds or less—have brighter afterglows than the simple, reigning model of afterglow emission predicts. Gamma-ray bursts (GRBs) are believed to occur when a star that has collapsed into a black hole or a neutron star whips a disk of gas and dust into a pair of powerful jets moving at nearly light speed. Like a lighthouse in fog, these so-called relativistic jets should cause whatever gas and dust that enshrouds the GRB source to glow brightly for hours after the burst's initial flash of energy."
Saturday, July 12, 2008
Gamma-Ray Bursts Give Awesome Afterglow
I have been enjoying the Scientific American web site today, and always take a look at the physics section - written to help a non-physicist get it! I wanted to put the spectacular image in my blog, with credit, but I am not sure if this is allowed. So visit the story to see it! Instead I have used an image I found on Google and credit goes to scubagrl.