Quantcast

Latest Compton Gamma Ray Observatory Stories

2009-07-02 14:35:00

WASHINGTON, July 2 /PRNewswire-USNewswire/ -- With NASA's Fermi Gamma-ray Space Telescope, astronomers now are getting their best look at those whirling stellar cinders known as pulsars. In two studies published in the July 2 edition of Science Express, international teams have analyzed gamma-rays from two dozen pulsars, including 16 discovered by Fermi. Fermi is the first spacecraft able to identify pulsars by their gamma-ray emission alone. (Logo:...

2009-07-02 16:08:20

NASA's Fermi Gamma-ray Space Telescope -- able to identify pulsars by gamma-ray emissions -- has provided data for two studies, U.S. officials said. International teams of astronomers say they've analyzed gamma-rays from two dozen pulsars, including 16 discovered by Fermi. A pulsar is the rapidly spinning and highly magnetized core left after a massive star explodes, NASA said. Since the demise of the Compton Gamma Ray Observatory a decade ago, we've wondered about the nature of unidentified...

ba9db5fc0b42983e7c08942e909dab67
2009-07-02 13:25:00

A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope is solving the mystery of previously unidentified gamma-ray sources and helping scientists understand the mechanisms behind pulsar emissions.A study to be published by an international team of scientists in the July 2 edition of Science Express describes 16 pulsars discovered by Fermi based on their pulsed emissions of high-energy gamma rays. A pulsar is a rapidly spinning neutron star, the dense core left behind after...

2df5fa69321506dc63e3dc7b5ddd46d41
2009-05-25 08:55:00

ESO's Very Large Telescope "” Europe's flagship facility for ground-based astronomy "” has been equipped with the first of its second generation instruments: X-shooter. It can record the entire spectrum of a celestial object in one shot "” from the ultraviolet to the near-infrared "” with high sensitivity. This unique new instrument will be particularly useful for the study of distant exploding objects called gamma-ray bursts. "X-shooter offers a capability that is...

6331f7c0ecaf16f4b76244a048fe79351
2009-04-23 09:32:24

An international team of astronomers has used the world's biggest radio telescope to look deep into the brightest galaxies that NASA's Fermi Gamma-ray Space Telescope can see. The study solidifies the link between an active galaxy's gamma-ray emissions and its powerful radio-emitting jets. "Now we know for sure that the fastest, most compact, and brightest jets we see with radio telescopes are the ones that are able to kick light up to the highest energies," said Yuri Kovalev, a team member...

ea37aa40511b1c09e18fa71b746e963a
2009-04-03 07:10:00

Integral has captured one of the brightest gamma-ray bursts ever seen. A meticulous analysis of the data has allowed astronomers to investigate the initial phases of this giant stellar explosion, which led to the ejection of matter at velocities close to the speed of light. In particular, the astronomers believe that the explosion lifted a piece of the central engine's magnetic field into space. On 19 December 2004, the blast from an exploding star arrived at Earth. ESA's Integral...

e9ec7f6dabcf846af501cea3571fd0461
2009-03-11 12:35:00

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 gamma rays from sources within the solar system to galaxies billions of light-years away. "Fermi has given us a deeper and better-resolved view of the gamma-ray sky than any previous space mission," said Peter Michelson, the lead scientist for the spacecraft's Large Area Telescope (LAT)...

2009-02-24 09:36:00

GREENBELT, Md., Feb. 24 /PRNewswire-USNewswire/ -- NASA Goddard Space Flight Center in Greenbelt, Md., is the home of many award-winning scientists, and this year is no different. This month, Climatologist Claire L. Parkinson, Astrophysicist Marc Kuchner and Astrophysicist Neil Gehrels received recognition of their achievements. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Claire L. Parkinson has been elected to the National Academy of Engineering for leadership in...

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....

fe47f1bfd53935d6a7bd5a8544ca22261
2009-02-19 15:30:00

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. "We were waiting for this one," said Peter Michelson, the principal investigator on Fermi's Large Area Telescope at Stanford University. "Burst emissions at these energies are still poorly understood, and Fermi is giving us the tools to understand them."...


Latest Compton Gamma Ray Observatory Reference Libraries

sts-37
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...

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...

6_f3739d4b04b11a1c267bfcc286610ef92
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...

6_f5324ad7d5514381282c99963af8be7c2
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,...

More Articles (4 articles) »
Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
Related