hypernova


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hypernova

(hÿ-per-noh -vă) A new type of supernova, possibly related to cosmological gamma-ray bursts. The prototype supernova, SN 1998bw, was an unusually energetic event, some 30 times more luminous than a normal core-collapse supernova. It was also detected as a gamma-ray burst, albeit a weak one. In the best model to date, the progenitor was a rapidly rotating, massive helium star that collapsed into a black hole forming a massive disk around it. Matter ejected along the spin axis in the form of a relativistic jet is believed to be responsible for the gamma-ray burst. Several more hypernovae have been identified since 1998.
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Also nominated as one of the most active teams in the competition was Zibsnis from Latvia; BusafiArc from Oman; and Future Architects from the UAE; as well as RB Systems; Slythunder Crew (UAE and India); Team Khaled; Team SIMENERGO (Ukraine); and last but not least, team Hypernova from Egypt.
Hypernovas are essentially giant supernovas, or exploding stars.
Hypernova include Gamma Ray Bursters - the largest explosions since the Big Bang, which created the universe.
Ahold, owner of the Hypernova chain, finalized sale of all its large-scale outlets at the beginning of this year and is focusing on the compact format.
According to a leading theory, a hypernova jet generates gamma-ray bursts when particles within it collide (SN: 7/10/99, p.
A supernova discovered by a Japanese astronomer last month is highly likely to be a hypernova, which has an explosive energy of up to 100 times greater than a supernova, according to an astronomical study Thursday.
Adjusted sales at the company's Albert and Hypernova stores in the Czech Republic and Slovakia slipped 7% at current exchange rates.
But with its colossal energy, a solitary Population III hypernova dispersed enough heavy elements to enrich more than 10 million solar masses of gas to beyond the critical level.
Astronomers now believe GRBs happen when a super-massive star collapses to form a black hole in a so-called hypernova.