(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 of its present ...
Astronomy
Apr 28, 2009
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An international team of astrophysicists using telescopes on the ground and in space have uncovered surprising changes in radiation emitted by an active galaxy. The picture that emerges from these first-ever simultaneous ...
Astronomy
Mar 18, 2009
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2
(PhysOrg.com) -- A new map combining nearly three months of data from NASA's Fermi Gamma-ray Space Telescope is giving astronomers an unprecedented look at the high-energy cosmos. To Fermi's eyes, the universe is ablaze with ...
Astronomy
Mar 11, 2009
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2
(PhysOrg.com) -- With the greatest total energy, the fastest motions, and the highest-energy initial emissions ever before seen, a gamma-ray burst recently observed by the Fermi Gamma-ray Space Telescope is one for the record ...
Astronomy
Feb 19, 2009
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(PhysOrg.com) -- Astronomers using NASA's Swift satellite and Fermi Gamma-ray Space Telescope are seeing frequent blasts from a stellar remnant 30,000 light-years away. The high-energy fireworks arise from a rare type of ...
Astronomy
Feb 10, 2009
3
0
(PhysOrg.com) -- XMM-Newton has caught the fading glow of a tiny celestial object, revealing its rotation rate for the first time. The new information confirms this particular object as one of an extremely rare class of stellar ...
Astronomy
Jan 13, 2009
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When my colleagues and I set to work on a century-old cosmic mystery, we found an unexpected celestial laboratory in Terzan 5, a dense star cluster currently plunging through our galaxy at breakneck speed.
Astronomy
Aug 13, 2024
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68
A research group led by the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences (CAS) report the discovery of a gamma-ray line up to 37 million electron-volts from an extremely bright gamma-ray burst, ...
Astronomy
Aug 7, 2024
0
195
In October 2022, astronomers were stunned by what was quickly dubbed the BOAT—the brightest-of-all-time gamma-ray burst (GRB). Now an international science team reports that data from NASA's Fermi Gamma-ray Space Telescope ...
Astronomy
Jul 25, 2024
2
368
For the first time, an international research team has succeeded in observing a two-photon decay on a so-called bare atomic nucleus from which the entire electron shell has been removed.
General Physics
Jul 17, 2024
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