First supernovae in this galaxy, where 3 more was detected later. SN 2002bj: Lupus +14.7 160,000,000 IIn NGC 1821: AM Canum Venaticorum-type outburst. SN 2003fg: Boötes: 4,000,000,000 Ia anonymous galaxy Also known as the "Champagne supernova" SN 2004dj: Camelopardalis: 8,000,000 II-P NGC 2403: NGC 2403 is an outlying member of the M81 …

The Type Ia supernova is a subcategory in the Minkowski–Zwicky supernova classification scheme, which was devised by German-American astronomer Rudolph Minkowski and Swiss astronomer Fritz Zwicky. There are several means by which a supernova of this type can form, but they share a common underlying mechanism. Theoretical astronomers long believed the …

Heutzutage werden mit Hilfe von automatisierten Suchprogrammen jährlich tausende Supernovae entdeckt, die sich in anderen Galaxien Millionen Lichtjahre entfernt befinden. Bezogen auf eine einzelne Galaxie sind Supernovae in der Regel vergleichsweise seltene Ereignisse (wenige Ereignisse pro Jahrtausend). Weblinks. Liste der bekannten Supernovae …

A pair-instability supernova is a type of supernova predicted to occur when pair production, the production of free electrons and positrons in the collision between atomic nuclei and energetic gamma rays, temporarily reduces the internal radiation pressure supporting a supermassive star's core against gravitational collapse. This pressure drop leads to a partial collapse, which in turn …

A hypernova (sometimes called a collapsar) is a very energetic supernova thought to result from an extreme core-collapse scenario. In this case, a massive star (>30 solar masses) collapses to form a rotating black hole emitting twin energetic jets and surrounded by an accretion disk.It is a type of stellar explosion that ejects material with an unusually high kinetic energy, an order of ...

SN 1987A was a type II supernova in the Large Magellanic Cloud, a dwarf satellite galaxy of the Milky Way.It occurred approximately 51.4 kiloparsecs (168,000 light-years) from Earth and was the closest observed supernova since Kepler's Supernova. 1987A's light reached Earth on February 23, 1987, and as the earliest supernova discovered that year, was labeled "1987A".

A Type II supernova (plural: supernovae or supernovas) results from the rapid collapse and violent explosion of a massive star.A star must have at least 8 times, but no more than 40 to 50 times, the mass of the Sun (M ☉) to undergo this type of explosion. Type II supernovae are distinguished from other types of supernovae by the presence of hydrogen in their spectra.

A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth (roughly less than 10 to 300 parsecs (30 to 1000 light-years) away) to have noticeable effects on Earth's biosphere.. An estimated 20 supernova explosions have happened within 300 pc of the Earth over the last 11 million years. Type II supernova explosions are …

Stars greater than 8 solar masses (M ⊙) will probably end their lives in dramatic supernovae explosions, while planetary nebulae seemingly only occur at the end of the lives of intermediate and low mass stars between 0.8 M ⊙ to 8.0 M ⊙. Progenitor stars that form planetary nebulae will spend most of their lifetimes converting their hydrogen into helium in the star's core by …

Eine Hypernova ist eine Supernova mit einer elektromagnetisch abgestrahlten Energie von mehr als 10 45 Joule unter Annahme einer räumlich isotropen Abstrahlung.Eine Hypernova stellt das obere Ende der superleuchtkräftigen oder superhellen Supernovae dar.