Evidence shows gamma ray bursts originate in Milky Way. However, short duration bursts range from a few milliseconds to 2 seconds with an average duration time of only 0.3 seconds (300 milliseconds). Learning about the collision from the fast moving gravitational waves, astronomers around the world jumped into action. NON-ISOTROPIC ANGULAR DISTRIBUTION FOR VERY SHORT-TIME GAMMA-RAY BURSTS D. B. Cline, C. Matthey, and S. Otwinowski University of California Los Angeles, Department of Physics and Astronomy, Box 951447 Los Angeles, California 90095-1547 USA Abstract. A longer-lived afterglow of X-ray, ultraviolet, optical, infrared, microwave, and radio emissions usually follows the initial flash of gamma rays. Another hypothesis that has been getting a lot of attention proposes that a gamma-ray burst occurs when the material from a hypernova (which is at least 100 times more powerful than a supernova) hurtles towards Earth at the speed of light. "One unknown variable is the rate of local gamma-ray bursts," said Thomas. high energy gamma-ray band can be achieved early in the next decade, in order to contribute to this science. An ice age is thought to have caused this extinction. Cosmic {gamma}-ray bursts remain a puzzle since their discovery about two decades ago. Evidence from recent satellites like Swift and Fermi indicate that the energy behind a gamma-ray burst comes from the collapse of matter into a black hole. Theoretically, it is widely accepted that short gamma-ray bursts can be produced by two distinctly different mechanisms, binary neutron star mergers and neutron star - black … University scientists have found new evidence that cosmic gamma ray bursts originate from within the Milky Way -- our own galaxy -- and not from the edge of the universe, as many astronomers had believed. No quiescent counterpart of a {gamma}-ray burst source has been unambiguously identified in any wavelength band and the angular distribution of sources in the sky is isotropic and indicates no association with any galactic or extragalactic features, thus leaving the burster distance scale undetermined. They didn't find any violations of the nuclear treaty, but they did discover bright bursts of gamma rays from beyond the solar system. Long duration bursts last more than 2 seconds and short duration ones last less than 2 seconds. February 28, 1997 – Gamma Ray Bursts & UFO Propulsion Systems. There are at least two classes of GRB, most conveniently referred to as “long” and Abstract. Gamma-Ray Bursts – A Brief History & Timeline. Jan. 14, 2019 — During the formation of a black hole a bright burst of very energetic light in the form of gamma-rays is produced, these events are called gamma-ray bursts.