No gamma-ray burst from within our own galaxy, the Milky Way, has been observed, and the question of whether one has ever occurred remains unresolved. In light of evolving understanding of gamma-ray bursts and their progenitors, the scientific literature records a growing number of local, past, and future GRB candidates. Sep 07, 2015  Na voljo na Deezer: iTunes: Spotify: Googleplay: Glasba: Rok Švab Besedilo.

Artist's illustration showing the life of a as converts lighter elements into heavier ones. When fusion no longer generates enough pressure to counteract gravity, the star rapidly collapses to form a. Theoretically, energy may be released during the collapse along the axis of rotation to form a gamma-ray burst. In, gamma-ray bursts ( GRBs) are extremely energetic explosions that have been observed in distant. They are the brightest events known to occur in the. Bursts can last from ten milliseconds to several hours.

After an initial flash of, a longer-lived 'afterglow' is usually emitted at longer wavelengths (,,,, and ). The intense radiation of most observed GRBs is thought to be released during a or as a high-mass implodes to form a or a. A subclass of GRBs (the 'short' bursts) appear to originate from a (the merger of ). The cause of the precursor burst observed in some of these short events may be the development of a resonance between the crust and core of such stars as a result of the massive tidal forces experienced in the seconds leading up to their collision, causing the entire crust of the star to shatter. The sources of most GRBs are billions of away from, implying that the explosions are both extremely energetic (a typical burst releases as much energy in a few seconds as the will in its entire 10-billion-year lifetime) and extremely rare (a few per galaxy per million years ). All observed GRBs have originated from outside the, although a related class of phenomena, flares, are associated with within the Milky Way.

It has been hypothesized that a gamma-ray burst in the Milky Way, pointing directly towards the Earth, could cause a event. GRBs were first detected in 1967 by the, which had been designed to detect; this was declassified and published in 1973. Following their discovery, hundreds of theoretical models were proposed to explain these bursts, such as collisions between.

Little information was available to verify these models until the 1997 detection of the first X-ray and optical afterglows and direct measurement of their using optical, and thus their distances and energy outputs. These discoveries, and subsequent studies of the galaxies and associated with the bursts, clarified the distance and luminosity of GRBs, definitively placing them in distant galaxies. Positions on the sky of all gamma-ray bursts detected during the BATSE mission. The distribution is, with no concentration towards the plane of the Milky Way, which runs horizontally through the center of the image. Gamma-ray bursts were first observed in the late 1960s by the U.S.

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Satellites, which were built to detect gamma radiation pulses emitted by nuclear weapons tested in space. The suspected that the might attempt to conduct secret nuclear tests after signing the in 1963.