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Latest Gamma-ray astronomy Stories

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2009-03-19 09:50:00

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 observations with optical, X-ray and new-generation gamma-ray telescopes is much more complex than scientists expected and challenges current theories of how the radiation is generated. The galaxy in question is PKS 2155-304, a type of object known as a "blazar." Like many...

2009-02-19 13:00:00

WASHINGTON, Feb. 19 /PRNewswire-USNewswire/ -- The first gamma-ray burst to be seen in high-resolution from NASA's Fermi Gamma-ray Space Telescope is one for the record books. The blast had the greatest total energy, the fastest motions and the highest-energy initial emissions ever seen. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) "We were waiting for this one," said Peter Michelson, the principal investigator on Fermi's Large Area Telescope at Stanford University....

2009-02-02 09:36:00

GREENBELT, Md., Feb. 2 /PRNewswire-USNewswire/ -- Astrophysicist Dr. Neil Gehrels of NASA's Goddard Space Flight Center in Greenbelt, Md., has been awarded the Henry Draper Medal by the National Academy of Sciences, Washington. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) The National Academy of Sciences (NAS) will honor 18 individuals in 2009 with awards recognizing extraordinary scientific achievements in the areas of biology, chemistry, geology, astronomy, social...

647850e01cf2d9bf7a12e03e98a9bb8e
2008-11-02 10:10:00

Thanks to ESA and UK technology transfer support, a British company has developed a device based on the gamma-ray detection equipment used in ESA's Integral astronomy satellite to detect and identify the radioactive material mixed with conventional explosives in "Ëœdirty bombs'. ESA has supported the development of technology for gamma-ray astronomy for more than 40 years. Integral, ESA's International Gamma-Ray Astrophysics Laboratory launched in 2002, is now detecting some of the...

2008-06-19 15:00:05

The U.S. space agency says its newest space telescope, the Gamma-ray Large Area Space Telescope, or GLAST, is in the process of being activated. The Delta II rocket carrying GLAST lifted off June 11 from launch pad 17-B at the Cape Canaveral Air Force Station in Florida. It is in orbit approximately 350 miles above the Earth and running well, officials said. The National Aeronautics and Space Administration said its engineers for the next month, will be busy turning on and checking the...

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2008-06-11 13:00:00

Today, NASA's Gamma-ray Large Area Space Telescope (GLAST for short) left Earth onboard a Delta II rocket. "The entire GLAST Team is elated," reported program manager Kevin Grady of NASA's Goddard Space Flight Center shortly after the rocket's liftoff from Cape Canaveral. "The observatory is now on-orbit and all systems continue to operate as planned." What is NASA's newest space telescope going to accomplish? GLAST will explore the most extreme environments in the universe, searching for...

2008-02-16 14:18:21

UK space scientist Emeritus Professor Alan Wells is to speak at the American Association for the Advancement of Science (AAAS) in Boston in February on: International Cooperation in Developing Swift and its Scientific Achievements. Professor Wells' presentation will be on Saturday 16th February at around 11.00 a.m. as part of a symposium entitled: Worldwide Hunt to Solve the Mystery of Gamma-Ray Bursts. In it, he will discuss the breadth of international collaborations, including the...

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

From mother Earth, the night sky can look peaceful and unchanging, but the universe as seen in gamma-rays is a place of sudden and chaotic violence. Using gamma-ray telescopes, astronomers witness short but tremendously intense explosions called gamma-ray bursts, and there is nothing more powerful. No one is sure what causes gamma-ray bursts. Favored possibilities include the collision of two neutron stars or a sort of super-supernova that occurs when extremely massive stars explode. One...

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

GREENBELT, Md. - 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. The GLAST spacecraft has successfully completed two of its three environmental tests at the prime contractor, General Dynamics Advanced Information Systems in Gilbert, Ariz. These tests included exposure to extreme vibrations and electromagnetic fields. "We've completed two of the big three tests, and now we're going to the NRL...

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. Integral was launched on 17 October 2002. Since then, the satellite has helped scientists make great strides in understanding the gamma-ray universe - from the atoms that make up all matter, giant black holes, mysterious gamma-ray bursts to the densest objects in the universe.  The...


Latest Gamma-ray astronomy 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...

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Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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