Quantcast

Latest Swift Gamma-Ray Burst Mission Stories

bd91596f4b6b261df0ff83b16422bf331
2005-12-18 20:35:00

Carnegie -- Cosmic gamma-ray bursts, the most powerful explosions in the universe, have the extreme brilliance of a billion billion Suns and occur several times a day. But they are not all created equal. For several decades astronomers have known that two types exist--long ones that last for tens or hundreds of seconds, and short bursts, which last a few milliseconds to a second. Intense research over the last decade has shown that long bursts are the death throes of massive stars in...

2005-10-05 14:18:10

An international team of astronomers led by Danish astronomer Jens Hjorth [1] has for the first time observed the visible light from a short gamma-ray burst (GRB). Using the 1.5m Danish telescope at La Silla (Chile), they showed that these short, intense bursts of gamma-ray emission most likely originate from the violent collision of two merging neutron stars. The same team has also used ESO's Very Large Telescope to constrain the birthplace of the first ever short burst whose position could...

2005-09-13 21:22:39

HONOLULU (AP) -- Telescopes atop Mauna Kea in Hawaii recorded the most distant cosmic explosion ever seen, probably caused by the collapse of a massive dying star, according to University of Hawaii astronomers. Astronomers from Japan and Hawaii used the telescopes to measure a dying star some 12.8 billion light years away, at the edge of the known universe. The burst released about as much energy as the sun will emit during its 10 billion year lifespan, according to Lennox Cowie, an...

2005-09-12 15:52:39

WASHINGTON (Reuters) - Astronomers said on Monday they have detected a cosmic explosion at the very edge of the visible universe, a 13-billion-year-old blast that could help them learn more about the earliest stars. The brilliant blast -- known as a gamma ray burst -- was probably caused by the death of a massive star soon after the Big Bang, but was glimpsed on September 4 by NASA's new Swift satellite and later by ground-based telescopes. The explosion occurred soon after the first...

2005-09-12 17:53:42

NASA's Swift satellite and ground-based telescopes have discovered the most distant exploding star on record, confirming a 1999 prediction made by University of Chicago astrophysicist Don Lamb and Daniel Reichart, who was then a graduate student at Chicago. Now a faculty member at the University of North Carolina, Chapel Hill, Reichart led the team that discovered the afterglow of the explosion, called a gamma-ray burst (GRB), which culminated in the confirmation of his and Lamb's earlier...

114d125621c4d7cd78e933215e364c171
2005-09-12 07:10:19

Astronomers Find Farthest Known Gamma-Ray Burst with ESO VLT ESO -- An Italian team of astronomers has observed the afterglow of a Gamma-Ray Burst that is the farthest known ever. With a measured redshift of 6.3, the light from this very remote astronomical source has taken 12,700 million years to reach us. It is thus seen when the Universe was less than 900 million years old, or less than 7 percent its present age. "This also means that it is among the intrinsically brightest Gamma-Ray...

0cbe3f231d2ab68971867513b254f1901
2005-05-26 17:25:00

Type Ic supernovae, or hypernovae, may be source of powerful bursts Berkeley -- Observations by two of the world's largest telescopes provide strong evidence that a peculiar type of exploding star may be the origin of elusive gamma-ray bursts that have puzzled scientists for more than 30 years. A team of astronomers from Italy, Japan, Germany and the United States, including the University of California, Berkeley, conclude from observations with the Keck and Subaru telescopes in Hawaii that...

486e7359b078ca03fcdf186f2ee2a1441
2005-05-12 07:30:00

Cambridge, MA -- Reporting in the May 12th issue of Nature, astronomers announced that they have penetrated the heart of the universe's most powerful explosion - a gamma-ray burst (GRB). Using the PAIRITEL (Peters Automated Infrared Imaging Telescope) robotic telescope on Mt. Hopkins, Arizona, they detected a flash of infrared light accompanying the burst of high-energy radiation that signaled the death of a star roughly fifteen times more massive than the Sun. "This is the first time...

8541212ed19bd9c75b5d76caca6fa2c91
2005-04-06 07:20:15

PSU -- The NASA-led Swift mission has measured the distance to two gamma-ray bursts -- back to back, from opposite parts of the sky -- and both were from over nine billion light years away, unleashed billions of years before the Sun and Earth formed. These represent the mission's first direct distance, or redshift, measurements, its latest milestone since being launched in November 2004. The distances were attained with Swift's Ultraviolet/OpticalTelescope (UVOT). The Swift science team...

1abcf9ed5c16044cd3ef07e2627350e1
2005-02-01 18:21:43

PSU -- The Swift satellite's Ultraviolet/Optical Telescope (UVOT) has seen first light, capturing an image of the Pinwheel Galaxy, long loved by amateur astronomers as the "perfect" face-on spiral galaxy. The UVOT now remains poised to observe its first gamma-ray burst. Swift is a NASA-led mission dedicated to the gamma-ray burst mystery. These random and fleeting explosions likely signal the birth of black holes. With the UVOT turned on, Swift now is fully operational. Swift's two other...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'