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The last supernova of 2005, SN 2005nc, was the 367th (14 × 26 + 3 = 367). ... There is a smaller chance that the next core collapse supernova will be produced by a ...
A failed supernova is an astronomical event in time domain astronomy in which a star suddenly brightens as in the early stage of a supernova, but then does not increase to the massive flux of a supernova. They could be counted as a subcategory of supernova imposters. They have sometimes misleadingly been called unnovae. [1] [failed verification]
A Type II supernova or SNII [1] (plural: supernovae) results from the rapid collapse and violent explosion of a massive star. A star must have at least eight times, but no more than 40 to 50 times, the mass of the Sun ( M ☉ ) to undergo this type of explosion. [ 2 ]
Although it had been thought more than 50 years ago that dust could form in the ejecta of a core-collapse supernova, [57] which in particular could explain the origin of the dust seen in young galaxies, [58] that was the first time that such a condensation was observed. If SN 1987A is a typical representative of its class then the derived mass ...
Supernova remnants driving a shock through the interstellar medium (ISM). Shocks traveling through a massive star as it explodes in a core collapse supernova. [4] Shocks in interstellar gas, caused by a collision between molecular clouds or by a gravitational collapse of a cloud. Accretion shocks at the edge of galaxy clusters.
The collapsar model describes a type of supernova that produces a gravitationally collapsed object, or black hole. The word "collapsar", short for "collapsed star", was formerly used to refer to the end product of stellar gravitational collapse, a stellar-mass black hole. The word is now sometimes used to refer to a specific model for the ...
Gravitational collapse of a massive star, resulting in a Type II supernova. Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity, which tends to draw matter inward toward the center of gravity. [1] Gravitational collapse is a fundamental mechanism for structure formation in the universe.
The collapse produces two reactions: one breaks apart iron nuclei into 13 helium atoms and 4 neutrons, absorbing energy; and the second produces a wave of neutrinos that form a shock wave. While all models agree there is a convective shock, there is disagreement as to how important that shock is to the supernova explosion.