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Latest Gamma ray Stories

Image 1 - Fermi Shows That Tycho's Star Shines In Gamma Rays
2011-12-13 11:56:08

In early November 1572, observers on Earth witnessed the appearance of a "new star" in the constellation Cassiopeia, an event now recognized as the brightest naked-eye supernova in more than 400 years.

2011-11-09 10:42:57

By combining three layers of detection into one new device, a team of researchers from Japan has proposed a new way to monitor radiation levels at power plant accident sites.

Image 1 - Researchers Detect High Energies Coming From Crab Pulsar
2011-10-06 14:03:01

Astrophysicists have detected pulsed gamma-ray emissions from the Crab pulsar with energies that exceed 100 billion electron-volts (GeV). These gamma-ray pulses surpass what current theoretical models of pulsars can explain.

Image 1 - Brightest Gamma Ray On Earth For A Safer, Healthier World
2011-09-19 10:45:51

The brightest gamma ray beam ever created- more than a thousand billion times more brilliant than the sun- has been produced in research led at the University of Strathclyde- and could open up new possibilities for medicine.

Image 1 - Balloon-based Experiment To Measure Distant Gamma Rays
2011-09-18 05:04:59

Beginning Sunday, September 18, 2011 at NASA's launch facility in Fort Sumner, New Mexico, space scientists from the University of New Hampshire will attempt to send a balloon up to 130,000 feet with a one-ton instrument payload to measure gamma rays from the Crab Pulsar, the remains of a supernova explosion that lies 6,500 light years from Earth.

2011-09-09 11:43:02

Two remarkable pulsed-power machines used to test the nation's defenses against atomic weapons have surpassed milestones at Sandia National Laboratories: 4,000 firings, called 'shots,' on the Saturn accelerator and 9,000 shots on the HERMES III accelerator.

2011-08-24 17:20:43

Cardiologists who perform heart operations using x-ray guided catheters are exposed to ionizing radiation at levels two to three times higher per year than those experienced by radiologists.

2011-08-23 21:40:18

Sunbathers have long known that melanin in their skin cells provides protection from the damage caused by visible and ultraviolet light.

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2011-05-04 08:54:16

MESSENGER carries a Gamma-Ray Spectrometer (GRS) that is capable of measuring and characterizing gamma-ray emissions from the surface of Mercury.

2011-04-26 15:14:51

The world's foremost researchers in laser science, optoelectronics and quantum optics will present their findings at the Conference on Lasers and Electro-Optics (CLEO: 2011), May 1 – 6 at the Baltimore Convention Center.


Latest Gamma ray 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...

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_c9b95f985acbe749f13bf6301a3180a85
2004-10-19 04:45:41

Electromagnetic Spectrum -- The electromagnetic spectrum describes the various types of electromagnetic radiation based on their wavelengths. Radio, representing wavelengths from a few feet to well over a mile, is at one end of the spectrum. Gamma ray radiation is at the other end: the wavelength of the harder types is so short, in the subatomic range, that we do not have instruments capable of directly measuring it. While the above classification scheme is generally accurate, in...

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Word of the Day
bawbee
  • A coin originally worth six pennies Scots, and later three; held equivalent to an English halfpenny.
  • (in plural) Money; cash.
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