News tagged with bursts
Astronomers explore 'last blank space' on map of the Universe
(PhysOrg.com) -- The most distant object ever discovered is described in this week's edition of the science journal Nature. Two international teams of astronomers report their observations of a gamma-ray burst ...
Oct 28, 2009 |
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Record-breaking X-ray blast briefly blinds space observatory
A blast of the brightest X-rays ever detected from beyond our Milky Way galaxy's neighborhood temporarily blinded the X-ray eye on NASA's Swift space observatory earlier this summer, astronomers now report. ...
Jul 14, 2010 |
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Where do the highest-energy cosmic rays come from? Not from gamma-ray bursts, says IceCube study
The IceCube neutrino telescope encompasses a cubic kilometer of clear Antarctic ice under the South Pole, a volume seeded with an array of 5,160 sensitive digital optical modules (DOMs) that precisely track ...
Apr 18, 2012 |
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Invading black holes explain cosmic flashes
(PhysOrg.com) -- Black holes are invading stars, providing a radical explanation to bright flashes in the universe that are one of the biggest mysteries in astronomy today.
Sep 18, 2009 |
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Fermi's latest gamma-ray census highlights cosmic mysteries
(PhysOrg.com) -- Every three hours, NASA's Fermi Gamma-ray Space Telescope scans the entire sky and deepens its portrait of the high-energy universe. Every year, the satellite's scientists reanalyze all of ...
Sep 09, 2011 |
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Small bangs and white holes
Most gamma-ray bursts come in two flavors. Firstly, there are long duration bursts which form in dense star-forming regions and are associated with supernovae – which would understandably generate a sustained ...
May 23, 2011 |
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The engine that powers short gamma-ray bursts
(PhysOrg.com) -- These explosions have been puzzling scientists for years: those brief flashes of gamma light can in fact release more energy in a fraction of a second than what our entire galaxy releases ...
Apr 08, 2011 |
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Astronomers Find Rare Beast by New Means
(PhysOrg.com) -- For the first time, astronomers have found a supernova explosion with properties similiar to a gamma-ray burst, but without seeing any gamma rays from it. The discovery, using the National ...
Jan 27, 2010 |
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New Gamma-Ray Burst Smashes Cosmic Distance Record (w/Video)
(PhysOrg.com) -- NASA's Swift satellite and an international team of astronomers have found a gamma-ray burst from a star that died when the universe was only 630 million years old, or less than five percent ...
Apr 28, 2009 |
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Unusual gamma-ray flash may have come from star being eaten by massive black hole
A bright flash of gamma rays observed March 28 by the Swift satellite may have been the death rattle of a star falling into a massive black hole and being ripped apart, according to a team of astronomers led ...
Jun 16, 2011 |
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Cannon-fired shock wave could stun, kill people
(PhysOrg.com) -- Police and military forces around the world may soon have a new non-lethal weapon at their hands. Called the Thunder Generator, the device is a cannon that fires shock waves that pass through ...
Jan 19, 2010 |
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Seeing is believing
(PhysOrg.com) -- Whenever you look up at the stars you are looking back in time, as light from even our closest neighbour, Alpha Centauri, started its journey to Earth more than four years ago. It is a phenomenon ...
Mar 24, 2010 |
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Network creates virtual super-telescope
Vast quantities of data are transferred in real time from telescopes around the world to a supercomputer in the Netherlands, where European researchers combine the information to create high-resolution images ...
Jun 08, 2009 |
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Keck Study Sheds New Light on "Dark" Gamma-ray Bursts
Since its launch in 2004, NASA's Swift has detected more than 430 gamma-ray bursts. Roughly half of them are "dark" bursts that emit little or no visible light. Dense knots of dust in otherwise normal galaxies ...
Jun 08, 2009 |
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Are TGFs Hazardous to Air Travelers?
Instruments scanning outer space for cataclysmic explosions called gamma-ray bursts are detecting intense flashes of gamma-ray energy right here in the friendly skies of Earth. These terrestrial gamma-ray ...
Space & Earth / Earth Sciences
Feb 11, 2010 |
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