Quantcast

Latest Gamma-ray burst Stories

1b580a4b94ae208adb38284a17094b291
2008-05-21 12:50:00

Thanks to a fortunate observation with NASA's Swift satellite, astronomers, for the first time, have caught a normal supernova at the moment of its birth--the first instant when an exploding star begins spewing its energy into space, transforming into a supernova that during its brief lifetime will shine brighter than billions of stars combined.

a73e320a7faafbbdad8441cee8aa94eb1
2008-05-20 09:50:00

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 flares.

414d14bea2affcee5f93de3ccf5ae4fb1
2008-04-10 14:56:27

Peering across 7.5 billion light-years and halfway back to the Big Bang, NASA's Hubble Space Telescope has photographed the fading optical counterpart of a powerful gamma ray burst that holds the record for being the intrinsically brightest naked-eye object ever seen from Earth.

b20e4643ed1cadd696571641a58358371
2008-03-20 15:00:00

A powerful stellar explosion detected March 19 by NASA's Swift satellite has shattered the record for the most distant object that could be seen with the naked eye. The explosion was a gamma ray burst.

2008-02-16 14:18:21

Gamma-ray bursts are short-lived events, lasting between a few milliseconds to a few minutes. The brightest of them emit more energy in a few seconds than our Sun will emit in its whole 10 billion year lifetime.

19edcfc55e5ad52c4ca95a42e3fba2e91
2008-01-25 09:20:00

NASA is preparing to launch a new space telescope named GLAST to study the most violent explosions in the history of our Universe. Called gamma-ray bursts, there is nothing more powerful.

66ca961573a3acdc6bcea2a1288c6bd91
2007-11-29 17:57:28

NASA’s Gamma-ray Large Area Space Telescope (GLAST) has arrived at the Naval Research Laboratory (NRL) in Washington for its final round of testing.

41cc43dd03d3db19a6a4c70ec982abd91
2007-10-17 14:55:00

With eyes that peer into the most energetic phenomena in the universe, ESA’s Integral has been setting records, discovering the unexpected and helping understanding the unknown over its first five years.

ecd51814879567c75f5ce8495f7fb4f91
2007-06-12 11:50:31

Astronomers have for the first time measured the velocity of the explosions known as gamma-ray bursts. The material is travelling at the extraordinary speed of more than 99.999% of the velocity of light, the maximum speed limit in the Universe.

290dcad9c3d851ba1c2f821e4a681bf81
2007-05-22 19:05:00

Using NASA’s Swift satellite, astronomers have discovered that energetic flares seen after gamma-ray bursts (GRBs) are not just hiccups, they appear to be a continuation of the burst itself.


Latest Gamma-ray burst Reference Libraries

7_7ab115b117284658644e345b89f5ba712
2004-10-19 04:45:43

Gamma-Ray Astronomy -- Gamma-ray astronomy is the astronomical study of gamma rays. Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Feenberg and Primakoff in 1948, Hayakawa and Hutchinson in 1952, and, especially, Morrison in 1958 had led scientists to believe that a number of different processes which were occurring in the universe would result in gamma-ray emission. These...

6_f3739d4b04b11a1c267bfcc286610ef92
2004-10-19 04:45:41

Hypernova -- A hypernova is a theoretical type of supernova produced when exceptionally large stars collapse at the end of their lifespan. In a hypernova, the core of the star collapses directly into a black hole and two extremely energetic jets of plasma are emitted from its rotational poles at nearly light speed. These jets emit intense gamma rays, and are a candidate explanation for gamma ray bursts. Theorists have come up with several plausible explanations for hypernovae. It may...

6_f5324ad7d5514381282c99963af8be7c2
2004-10-19 04:45:41

Gamma-Ray Burst -- In astronomy, Gamma-ray bursters (GRBs) are flashes of gamma rays that last from seconds to hours, the longer ones being followed by several days of X-ray afterglow. They occur at random positions in the sky several times each day. They are now believed to result from tremendous explosions in far away galaxies, during the creation of a black hole from a dying star or two colliding neutron stars. The black hole, surrounded by a rotating disk of matter falling into it,...

More Articles (3 articles) »
Word of the Day
bowerly
  • Large; stout; burly.
The word 'bowerly' is an alteration of 'burly'.