So when we detect gamma-rays from space, we know they signal intensely hot, extreme events.
Gamma-rays have thousands to millions or even billions of times the energy of ordinary sunlight.
To make this discovery, the researchers sifted through four years of data tracking gamma-rays that were created by pions.
FORBES: Scientists Confirm Cosmic Rays Come From Exploding Stars
The explosive energy is released in the form of neutrinos, light (mostly gamma-rays), and a pair of relativistically outflowing emitting jets.
It would necessarily be beamed energy of gamma-rays, x-rays, and cosmic rays resulting either from the merger of two neutron stars.
FORBES: Decoding A Great Earth Die-Off: Was A Gamma-Ray Burst Really The Trigger?
Gamma-rays are the most energetic form of light, with wavelengths far shorter than ordinary optical light (the light your eye can see), or even ultraviolet or X-ray light.
The skies are currently being flooded with the brightest display of gamma rays - the Universe's highest-energy light - ever seen by astronomers.
Meanwhile, the newly real particles decay, giving off (among other things) light, X-rays and gamma rays.
X-rays and gamma rays that Eros gives off in response to bombardment by solar and cosmic radiation.
Gamma rays are high-frequency electromagnetic radiation essentially, extremely energetic light.
If an aggressor launches a nuclear device of whatever size and detonates it above the atmosphere and in the line of site of its target country, the x-rays and gamma rays emitted by the blast will cause an electromagnetic pulse, or wave a million times stronger than the strongest radio wave.
CENTERFORSECURITYPOLICY: An urgent memo to the next government
X-rays from three of them, in between their gamma-ray outbursts.
The pions, in turn, will decay rapidly into very high-energy light, or gamma rays.
X-rays are easier to pinpoint than gamma rays, so BeppoSAX was able to give astronomers a position for the bursts that was accurate enough to aim a big optical telescope at.
Since every isotope that spews gamma or X rays or charged particles does so in a unique way--an atomic fingerprint, of sorts--the color and intensity of the flash tells the detector which isotope is present and in what quantity.
If the equivalent of an earthquake were to occur on one (and they are known to occur on pulsars), it would be powerful enough to erupt with a blast of gamma rays thereby solving puzzle number three, the soft gamma-ray repeaters.
Interestingly, an April 18 paper in the journal Nature reported that upper limits for neutrinos measured from IceCube are low enough that gamma-ray bursts are unlikely to be the sole source of ultra-high energy cosmic rays.
And that depends on being able to see the lower-energy radiation, in order to pinpoint what it was that exploded (gamma rays are impossible to focus, so the location of a burst is known only approximately).
X-rays, ultraviolet light and visible light particularly once it has weakened enough to stop emitting gamma rays.
When the cosmic rays and gamma rays smash into molecules in the Earth's atmosphere, they set off a cascade of other fast-moving particles.
Progress: Just weeks after our story appeared, the USDA gave the go- ahead to the meat industry to use irradiation, which destroys bacteria by showering meat with electrons, gamma rays or x rays.
应用推荐