Gamma-ray bursts are one of the greatest mysteries of modern astronomy. At present, we don't know what causes them, where they come from nor when they will occur.
Gamma-Ray Bursts
Many of the same considerations applicable to relativistic jets in AGN also seem to apply to gamma-ray bursts and their afterglows.
New Gamma-Ray burst breaks the distance record
The small white arrow in this picture marks the position of GRB 000131, the most distant gamma-ray burst (GRB) yet recorded.
Unique gamma-ray burst gives clues to formation
By Jim Allen
for ASTRONOMY NOW
Posted: 26 July 2010 ...
The first gamma-ray bursts were detected while scientists were using satellites to look for gamma-rays that would result from violations of the Nuclear Test Ban Treaty during the Cold War Era of the 1960s.
GAMMA-RAY BURSTS
Discovered serendipitously in the late 1960s by military satellites looking for violators of the Nuclear Test Ban Treaty, and first made public in the 1970s, ...
gamma-ray burst
a short, intense burst of high-energy radiation emanating from the distant universe
gas giant ...
Gamma-ray burst (GRB)
Gamma ray bursts are short and intense flashes of gamma rays, lasting from milliseconds up to several minutes, followed by a longer lasting afterglow.
Gamma-ray Burst: Among the most powerful events in the Universe, a gamma-ray burst is believed to be the extremely powerful energy discharge of a black hole forming from the death of a giant star.
Gamma-Ray Burst (GRB)
Plural is GRBs. A burst of gamma-rays from space lasting from a fraction of a second to many minutes. There is no clear scientific consensus as to their cause or even their distance.
gamma-ray burster: An object that produces a sudden burst of gamma rays; thought to be associated with neutron stars and black holes.
gas tail (type I): The tail of a comet produced by gas blown outward by the solar wind. (See dust tail.) ...
Gamma-ray bursts (GRBs) are probably the most luminous events in the universe since the Big Bang. They are flashes of gamma rays coming from seemingly random places in deep space at random times.
gamma-ray burst An outburst that radiates tremendous amounts of energy, equal to or greater than a supernova, in the form of gamma rays and X-rays.
Gamma-Ray Burst (GRB)
A brief, intense, and powerful burst of gamma rays, the highest-energy, shortest-wavelength radiation in the electromagnetic spectrum. These bursts emanate from distant sources outside our galaxy and last only a few seconds.
Gamma-ray bursts are the most powerful events in the universe, temporarily outshining several galaxies and likely signaling the birth of a black hole.
Gamma-Ray Burst Afterglow
(Added 02/10/03) Since gamma-ray bursts were discovered a few years ago, one of the main questions has been what causes them, and if they originate within our galaxy or are of extragalactic origin.
The Gamma-ray burst GRB 971214 measured in 1998 was at the time thought to be the most energetic event in the universe, with the equivalent energy of several hundred supernovae.
--. "Gamma-Ray Bursters Demystified." Engineering and Science: The Alumni Magazine of the California Institute of Technology 55, No. 1, 2-3, 1997.
Hurley, K. "What are Gamma-Ray Bursters?" Sky & Telescope, 143-147, Aug. 1990.
See cosmic gamma-ray bursts.
Ganymede (J III)
The largest satellite of Jupiter. Radius 2635 km (slightly larger than Mercury). Mass about 1.65 × 1026 g; period 7.155 days; e = 0.0015.
While most gamma-ray bursts are invisible to us (since gamma-rays can not reach the surface of the Earth), it is still possible to "see" them, since the total energy given off is huge.
Cosmology Using Gamma-Ray Bursts
12 Dec 06 - Brad Schaefer has posted his paper about the gamma-ray burst (GRB) Hubble diagram. I have binned data from the table in this paper to compute the luminosity distance vs.
* X-ray emission lines were associated for the first time with a gamma-ray burst, GRB 991216. (Piro, et al., 2000)
* High school students, using Chandra data, discovered a neutron star in supernova remnant IC 443.
In 1967 a Vela military satellite designed to detect nuclear explosions discovered the first gamma-ray bursts (GRBs).
Here's the stuff we found when you searched for "gamma-ray bursts"
gamma-ray burst
gamma ray burst
Burst
Transient Random Noise Bursts With Announcements
Berry Burst Cheerios
Burst wide open at the sight of you
Meteor burst communications ...
The fading fireball of a gamma-ray burst - a sudden burst of gamma rays from deep space - that is observable in less energetic wavelengths, such as X-ray, optical, and radio.
How are supernovas and gamma-ray bursts related?
What is the principal heat source for insterstellar matter?
What are the principal distrubutors of heavy elements in the universe?
Does a supernova eplode?
What is a supernova?
What is a supernova?
Today, these gamma-ray bursts are seen to last for fractions of a second to minutes, popping off like cosmic flashbulbs from unexpected directions, flickering, and then fading after briefly dominating the gamma-ray sky.
The spacecraft also has detectors that observe gamma-ray bursts. Gamma-ray bursts are brief flashes of gamma rays. Scientists think most of these bursts come from exploding stars that become black holes as their cores collapse.
Gamma-Ray Burst (GRB) - Space and Astronomy Definition - Online Dictionary ...
Fast Fourier Transformation (FFT) - Space and Astronomy Definition - Online...
Cepheid Variable - Space and Astronomy Definition - Online Dictionary and G...
The VLA enables astronomers to make high spatial resolution observations of the radio emission from galaxies, quasars, gamma-ray bursts, and many objects within the Milky Way.
The Gamma-ray burst GRB 971214 in 1998 has been found to be most energetic event in the universe, with the equivalent energy of several hundred supernovae.
gamma-ray burst
A random burst of energy from distant objects in the form of gamma rays. Gamma-ray bursts release an enormous amount of energy and are not clearly understood.
99 percent the speed of light hit the Earth, what would happen? Q346
Where does Space end? Q257
What is a gamma-Ray burst? Q233
On which planets would it be possible to live? Q160
Is the Sun shrinking in size by 200 miles per year? Q105 ...
two solar wind plasma instruments;
a unified radio/plasma wave instrument;
three energetic-charged particle instruments;
an interstellar neutral gas sensor;
a solar X-ray/cosmic gamma-ray burst detector;
and a cosmic dust sensor.
There have been dozens of space-based telescopes, including past missions like the highly successful Compton Gamma-Ray Observatory, which helped astronomers unravel some of the mysteries of gamma-ray bursts, ...
HYPERNOVA
A hypernova is an enormous collapse and subsequent explosion of a supergiant star that eventually forms a black hole. This explosion is bigger than a supernova and is accompanied by a gamma-ray burst. The plural of hypernova is Hypernovae.
The Konus Gamma-Ray Spectrometer instrument, provided by the Ioffe Institute, Russia, is one of two instruments on Wind which will study cosmic gamma-ray bursts, rather than the solar wind. A French instruments is also aboard.
The system consists of four satellites in a circular orbit around the Earth with a radius of 120,000 km. The Vela satellites have detected cosmic gamma-ray bursts (q.v.). [H76]
Vela Supernova Remnant ...
bursts of gamma-rays in bipolar jets (possibly the source of some of the ``gamma-ray burst'' objects). Gravity finally wins. Nothing holds it up.
BATSE (Imagine the Universe Dictionary - NASA GSFC) BATSE (Burst and Transient Source Experiment) is an instrument aboard the Compton Gamma Ray Observatory that detects and locates gamma-ray bursts in the sky.
 See also: Ray, Universe, Energy, Astrophysics, Earth
  
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