News tagged with gamma
Astronomers explore 'last blank space' on map of the Universe
(PhysOrg.com) -- The most distant object ever discovered is described in this week's edition of the science journal Nature. Two international teams of astronomers report their observations of a gamma-ray burst ...
Oct 28, 2009 |
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Gamma-ray photon race ends in dead heat; Einstein wins this round
Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish ...
Oct 28, 2009 |
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Fermi Telescope Caps First Year With Glimpse of Space-Time (w/ Video)
During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. It captured more than one thousand discrete sources of gamma ...
Oct 28, 2009 |
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Blast from the Past Gives Clues About Early Universe
(PhysOrg.com) -- Astronomers using the National Science Foundation's Very Large Array (VLA) radio telescope have gained tantalizing insights into the nature of the most distant object ever observed in the ...
Oct 28, 2009 |
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Immune system quirk could lead to effective tularemia vaccine
Immunologists at the University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh of UPMC and the have found a unique quirk in the way the immune system fends off bacteria called Francisella tularensis, ...
Medicine & Health / Medical research
Oct 22, 2009 |
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Getting on 'the GABA receptor shuttle' to treat anxiety disorders
There are increasingly precise molecular insights into ways that stress exposure leads to fear and through which fear extinction resolves these fear states. Extinction is generally regarded as new inhibitory learning, but ...
Medicine & Health / Psychology & Psychiatry
Oct 22, 2009 |
4.5 / 5 (2) |
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Herbal tonic for radiotherapy
Antioxidant extracts of the leaves of the Gingko biloba tree may protect cells from radiation damage, according to a study published in the International Journal of Low Radiation. The discovery may one day be used to hel ...
Oct 19, 2009 |
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Heart of a galaxy emits gamma rays
(PhysOrg.com) -- Quite a few distant galaxies turn out to be cosmic delivery rooms. Large numbers of massive stars are born in the hearts of these starburst galaxies, and later explode as supernovae. In the ...
Oct 02, 2009 |
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Very High Energy Gamma Rays
(PhysOrg.com) -- Gamma-rays are the most energetic known form of electromagnetic radiation, with each gamma ray being at least one hundred thousand times more energetic than an optical light photon. The most ...
Sep 25, 2009 |
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Fermi Large Area Telescope Reveals Pulsing Gamma-Ray Sources
(PhysOrg.com) -- Scientists at the Naval Research Laboratory Space Science Division and a team of international researchers have positively identified cosmic sources of gamma-ray emissions through the discovery ...
Sep 22, 2009 |
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Invading black holes explain cosmic flashes
(PhysOrg.com) -- Black holes are invading stars, providing a radical explanation to bright flashes in the universe that are one of the biggest mysteries in astronomy today.
Sep 18, 2009 |
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Fermi Large Area Telescope reveals pulsing gamma-ray sources
Scientists at the Naval Research Laboratory (NRL) Space Science Division and a team of international researchers have positively identified cosmic sources of gamma-ray emissions through the discovery of 16 ...
Sep 09, 2009 |
4.6 / 5 (12) |
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Large Area Telescope First Year Data Released
(PhysOrg.com) -- Ever since the Large Area Telescope launched aboard the Fermi Gamma-ray Space Telescope in June 2008, the LAT team has been analyzing data, searching for answers to some of the most pressing ...
Aug 27, 2009 |
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Has PAMELA Already Seen Dark Matter?
(PhysOrg.com) -- Back in 2006, PAMELA (a Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) was launched with the purpose of detecting cosmic radiation and looking for clues pointing ...
Aug 25, 2009 |
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Dark Matter May be Easier to Detect than Previously Thought
(PhysOrg.com) -- The Milky Way, like many other galaxies, is thought to be embedded in massive, lumpy amounts of dark matter that release gamma rays and other emissions. Although at first these emissions seem ...
Aug 10, 2009 |
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