Search results for gamma-ray bursts:
Scientists Predict How to Detect a Fourth Dimension of Space
May 25, 2006 |
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Scientists at Duke and Rutgers universities have developed a mathematical framework they say will enable astronomers to test a new five-dimensional theory of gravity that competes with Einstein's General Theory ...
Billions of particles of anti-matter created in laboratory
Nov 17, 2008 |
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(PhysOrg.com) -- Take a gold sample the size of the head of a push pin, shoot a laser through it, and suddenly more than 100 billion particles of anti-matter appear.
Matter-antimatter molecules of positronium observed in the lab for the first time
Sep 12, 2007 |
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Physicists at UC Riverside have created molecular positronium, an entirely new object in the laboratory. Briefly stable, each molecule is made up of a pair of electrons and a pair of their antiparticles, called ...
Mysterious energy burst stuns astronomers
Sep 28, 2007 |
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Astronomers studying archival data from an Australian radio telescope have discovered a powerful, short-lived burst of radio waves that they say indicates an entirely new type of astronomical phenomenon.
Spinning Black Hole Pushes the Limit
Nov 20, 2006 |
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The existence of black holes is perhaps the most fascinating prediction of Einstein's General Theory of Relativity. When any mass, such as a star, becomes more compact than a certain limit, its own gravity ...
Gamma-Ray Burst Challenges Theory
Mar 08, 2007 |
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In a series of landmark observations gathered over a period of four months, NASA's Swift satellite has challenged some of astronomers' fundamental ideas about gamma-ray bursts (GRBs), which are among the most ...
Death of massive star creates brightest burst ever seen
Mar 20, 2008 |
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Gamma-Ray Bursts are the most powerful explosive events in the Universe. They occur in far-off galaxies and so are usually faint. But on the morning of March 19th 2008 the Swift satellite found a burst which ...
AMANDA's First Six Years
Feb 29, 2008 |
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The most recent results from the Antarctic Muon and Neutrino Detector Array, or AMANDA, located a mile under the ice at the South Pole, have yielded the most stringent prediction yet for the highest possible ...
A Star That Bursts, Blinks and Disappears
Sep 30, 2008 |
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(PhysOrg.com) -- "Twinkle, twinkle little star" goes the nursery rhyme. Now, astronomers are reporting on a strange case where one of the littlest of stars "twinkled" with gamma rays, X-rays, and light -- ...
Intergalactic 'shot in the dark' shocks astronomers
Dec 18, 2007 |
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A team of astronomers has discovered a cosmic explosion that seems to have come from the middle of nowhere — thousands of light-years from the nearest galaxy-sized collection of stars, gas, and dust. This ...
Gamma Ray Delay May Be Sign of 'New Physics'
Oct 01, 2007 |
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Delayed gamma rays from deep space may provide the first evidence for physics beyond current theories.
New Kind of Cosmic Explosion Detected
Feb 27, 2006 |
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Scientists using NASA's Swift satellite have detected a new kind of cosmic explosion. The event appears to be a precursor to a supernova, which is expected to reach peak brightness in about a week's time. UK ...
Most distant cosmic explosion was a star collapsing into a black hole
Mar 08, 2006 |
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It came from the edge of the visible universe, the most distant explosion ever detected. In this week's issue of Nature, scientists at Penn State University and their U.S. and European colleagues discuss how th ...
A simple survey yields a cosmic conundrum
Jul 31, 2006 |
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A survey of galaxies observed along the sightlines to quasars and gamma-ray bursts--both extremely luminous, distant objects--has revealed a puzzling inconsistency. Galaxies appear to be four times more common in the direction ...
The mouse that roared: pipsqueak star unleashes monster flare
May 19, 2008 |
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On April 25, NASA’s Swift satellite picked up the brightest flare ever seen from a normal star other than our Sun. The flare, an explosive release of energy from a star, packed the power of thousands of solar ...
