SN 2007bi

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SN 2007bi
Event type Supernova   OOjs UI icon edit-ltr-progressive.svg
type Ic
Dateby Nearby Supernova Factory
Flag of the United States.svg  USA
Constellation Virgo
Right ascension 13h 19m 20.19s
Declination +08° 55' 44.3
Epoch J2000.0
Galactic coordinates 324.1496 +70.6427
Host Anon J131920+0855
Other designationsSN 2007bi

SN 2007bi was an extremely energetic supernova discovered early in 2007 by the international Nearby Supernova Factory based at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. The precursor star is estimated to have had 200 solar masses at the time of its formation and around 100 solar masses in its core when it went supernova. The explosion ejected more than 22 solar masses of silicon and other heavy elements into space during this supernova including more than 6 solar masses of radioactive nickel which caused the expanding gases to glow very brightly for many months.

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The supernova has been described as an unambiguous fit for the pair-instability supernova model.

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A supernova is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely destroyed to form a diffuse nebula. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months.

<span class="mw-page-title-main">Superluminous supernova</span> Supernova at least ten times more luminous than a standard supernova

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<span class="mw-page-title-main">Stellar black hole</span> Black hole formed by a collapsed star

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<span class="mw-page-title-main">Thermal runaway</span> Loss of control of an exothermal process due to temperature increases

Thermal runaway describes a process that is accelerated by increased temperature, in turn releasing energy that further increases temperature. Thermal runaway occurs in situations where an increase in temperature changes the conditions in a way that causes a further increase in temperature, often leading to a destructive result. It is a kind of uncontrolled positive feedback.

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<span class="mw-page-title-main">Type II supernova</span> Explosion of a star 8 to 45 times the mass of the Sun

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