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Latest Compton Gamma Ray Observatory Stories

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...

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2008-11-24 09:25:34

Milagro Observatory unveils something never before seen from Earth A Los Alamos National Laboratory cosmic-ray observatory has seen for the first time two distinct hot spots that appear to be bombarding Earth with an excess of cosmic rays. The research calls into question nearly a century of understanding about galactic magnetic fields near our solar system. Joining an international team of collaborators, Los Alamos researchers Brenda Dingus, Gus Sinnis, Gary Walker, Petra Hntemeyer and John...

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2008-11-17 12:32:21

Massive energy releases occur every day in the upper reaches of Earth's atmosphere. Lightning may give rise to these bursts of radiation. However, unlike the well-known flashes of light and peals of thunder familiar to Earth-dwellers, these energy releases are channeled upward and can be detected only from space. Our atmosphere protects us from the effects of this radiation, but the mechanisms at work can impact Earth's upper atmosphere and its space environment. A new nano satellite mission,...

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2008-10-17 08:50:00

People of the 'Deep South' love a good story and they're about to get a doozy. It begins next week when researchers from 25 countries converge on Huntsville, Alabama, to share the latest findings on the biggest explosions since the Big Bang itself. The 6th Huntsville Gamma-ray Burst Symposium 2008 convenes Oct. 20th and the talking won't stop for four straight days. One speaker after another will take the audience on a wild ride from the edge of the observable Universe, where gamma-ray bursts...

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2008-10-16 14:10:00

About three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. Discovered by NASA's Fermi Gamma-ray Space Telescope, the object, called a pulsar, is the first one known that only "blinks" in gamma rays. "This is the first example of a new class of pulsars that will give us fundamental insights into how these collapsed stars work," said Stanford University's Peter Michelson, principal investigator for Fermi's Large Area Telescope in Palo Alto, Calif. The...

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2008-10-13 08:55:00

Gamma-ray bursts, powerful glares of high-energy that wash through the Universe once every day or so are, for a brief time, the brightest objects in the gamma-ray sky. ESA's Integral gamma-ray observatory has observed several low-luminosity gamma-ray bursts, confirming the existence of an entire population of weaker bursts hardly noticed so far. When it comes to detecting gamma-ray bursts (or GRBs), Integral is equipped with the most sensitive detector ever launched into space "“ the...

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2008-08-29 07:10:00

Researchers say a strong particle accelerator has been located in the Crab Nebula, a magnetic field surrounding the stellar corpse at the nebula's center. The discovery was found with a tricky measurement that showed polarized high-energy radiation near the star.  It's electrical field aligned neatly with the star's axis. The Crab Nebula is the remaining bits of a supernova that occurred in 1054 CE.  The subsequent pulsar left behind is a dense corpse. The pulsar emits particles...

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2008-08-26 15:40:00

WASHINGTON -- NASA's newest observatory, the Gamma-Ray Large Area Space Telescope, or GLAST, has begun its mission of exploring the universe in high-energy gamma rays. The spacecraft and its revolutionary instruments passed their orbital checkout with flying colors. NASA announced today that GLAST has been renamed the Fermi Gamma-ray Space Telescope. The new name honors Prof. Enrico Fermi (1901 - 1954), a pioneer in high-energy physics. "Enrico Fermi was the first person to suggest how...

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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...

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2008-05-29 13:15:55

When NASA launches its newest space observatory, physicists at the University of California, Santa Cruz, will be watching as the product of nearly 16 years of hard work blasts into orbit. The UCSC team led an international effort to design a massive detector system for the Gamma-ray Large Area Space Telescope (GLAST), scheduled for launch from Cape Canaveral on June 3. GLAST will explore the universe's most extreme environments, searching for answers to long-standing questions about dark...


Latest Compton Gamma Ray Observatory Reference Libraries

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2012-03-24 09:56:35

Atlantis launched from Kennedy Space center on April 5, 1991 at 9:22 AM EST and landed at Edwards Air Force Base on April 11 at 6:55 AM EST. The shuttle orbited 93 times at an altitude of 248 nautical miles at an inclination of 28.45 degrees and travelled 2.5 million miles. The mission lasted 5 days, 23 hours, 32 minutes, and 44 seconds. The first spacewalk since 1985 was performed by two astronauts to test the ability to move themselves and equipment about while working on the planned...

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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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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...

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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,...

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