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Gamma Ray Bursts

Beams of Radiation released by Hyper Novas

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A Quick Tip by shoyu1

  • Feb 7, 2010
  • by
Deep in space lays a monster...and only through its death cry can we find it.
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review by . February 07, 2010
With this post I will bring you up-to-date on all the events that just may unlock the secrets hidden within our Universe.  We begin in the late 80's when a discovery... something so deadly in the depths of space, it destroyed everything in its path. Explosions of inconceivable power were appearing  throughout the universe hundreds of times a day. Scientists needed to find out what the source of these explosions were. Little did they realize that these forces of destruction may answer the …
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Justyn Joe Richardson ()
Ranked #131
My name is Justyn Richardson but I go by the name Shoyu - after joining the on-line gaming site, Pogo, I have reverted back to my childhood nickname of Tasteless Joe. I first acquired the name when I … more
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Wiki

Gamma-ray bursts (GRBs) are flashes of gamma rays associated with extremely energetic explosions in distant galaxies. They are the most luminous electromagnetic events occurring in the universe. Bursts can last from milliseconds to nearly an hour, although a typical burst lasts a few seconds. The initial burst is usually followed by a longer-lived "afterglow" emitting at longer wavelengths (X-ray, ultraviolet, optical, infrared, and radio).

Most observed GRBs are believed to be a narrow beam of intense radiation released during a supernova event, as a rapidly rotating, high-mass star collapses to form a black hole. A subclass of GRBs (the "short" bursts) appear to originate from a different process, possibly the merger of binary neutron stars.

The sources of most GRBs are billions of light years away from Earth, implying that the explosions are both extremely energetic (a typical burst releases as much energy in a few seconds as the Sun will in its entire 10 billion year lifetime) and extremely rare (a few per galaxy per million years[1]). All observed GRBs have originated from outside the Milky Way galaxy, although a related class of phenomena, soft gamma repeater flares, are associated with magnetars within the Milky Way. It has been hypothesized that a gamma-ray burst in the Milky Way could cause a mass extinction on Earth.[2]

GRBs were first detected in 1967 by the Vela satellites, a series of satellites designed to detect covert nuclear weapons tests....

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