Latest Gamma-ray bursts Stories
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.
Using NASAâ€™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.
NASA's Swift satellite has challenged some of astronomers' fundamental ideas about gamma-ray bursts (GRBs), which are among the most extreme events in our universe.
A new theory to explain the high-energy gamma-ray emissions from collapsing stars has been put forward by an international team of researchers.
Thanks to a clever piece of design and a sophisticated piece of analysis by European astronomers, Integral - ESAâ€™s orbiting gamma ray observatory - can now make images of the most powerful gamma-ray bursts even if the spacecraft itself is pointing somewhere completely different.
Almost 40 years have passed since top secret nuclear weapon warning satellites accidentally discovered bursts of high energy gamma rays coming from space. Although many thousands of gamma ray bursts (GRBs) have since been detected, the origin and nature of these bursts is still not well understood.
An international team of scientists using three NASA satellites and a host of ground-based telescopes believes it has solved the greatest remaining mystery of the mysterious gamma-ray bursts (GRBs), the most powerful explosions in the universe. The shorter of two versions of these bursts appear to be caused by the collision of closely orbiting neutron stars or one of those compact stars and a black hole, said the University of Chicago's Don Lamb.
First simultaneous observation of a gamma-ray burst in the X-ray and in the very high energy gamma ray band
Imagine an explosion that could emit a million times more energy than the combined output of all the stars in the Milky Way. If you could hear this burst, it would deafen you. If you could see one, it would blind you. Any life within a radius of many solar systems would be annihilated.
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,...
- In medieval musical notation, a sign or neume denoting a shake or trill.