Latest Gamma-ray astronomy Stories
A cosmic explosion seen last February may have been the "tip of an iceberg," showing that powerful, distant gamma ray bursts are outnumbered ten-to-one by less-energetic cousins, according to an international team of astronomers.
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.
Astronomers have witnessed a never-seen-before event in observations by ESAâ€™s XMM-Newton spacecraft - a collision between a pulsar and a ring of gas around a neighbouring star.
Observing the cosmos, full of violent phenomena and extreme energy, has been the task of ESAâ€™s Integral gamma-ray observatory since its launch on October 17, 2002. Three years later, the mission is going very well and has recorded a wealth of important discoveries.
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.
A team of Italian astronomers said on Monday they had witnessed the afterglow from one of the brightest and most distant gamma-ray bursts ever detected.
First simultaneous observation of a gamma-ray burst in the X-ray and in the very high energy gamma ray band
An international team of scientists has uncovered a rare type of neutron star so elusive that it took three satellites to identify it.
In a recent issue of Science Magazine, the High Energy Stereoscopic System (H.E.S.S.) team of international astrophysicists reports the discovery of another new type of very high energy (VHE) gamma ray source.
Observations of a cosmic explosion detected on Feb. 15 by two NASA satellites have thrown into doubt one popular explanation for such explosions and have also seriously weakened the argument for yet another. But solving the mystery any time soon may be forestalled by plans to shut down one of the satellites in September.
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...
- Stoppage; cessation (of labor).
- A standing still or idling (of mills, factories, etc.).