|
|
Hypernova
|
NASA's artist impression of SN 2006gy, one of the most luminous hypernovae seen
A hypernova (pl. hypernovae or hypernovas) is a type of star explosion with an energy substantially higher than that of standard supernovae. An alternative term for most hypernova is "superluminous supernova" (SLSN). Such explosions are thought to be the origin of long-duration gamma-ray bursts.Just like supernovae in general, hypernovae are produced by several different types of stellar explosion: some well modelled and observed in recent years, some still tentatively suggested for observed hypernovae, and some entirely theoretical. Numerous hypernovae have been observed corresponding to supernovae type Ic and type IIn, and possibly also at least one of type IIb.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 collapse of a fast-rotating star, as discussed below.
^ "A Hypernova: The Super-charged Supernova and its link to Gamma-Ray Bursts". Imagine the Universe!. NASA. Retrieved 9 December 2011.
^ Hamuy, M.; Deng, J.; Mazzali, P. A.; Morrell, N. I.; Phillips, M. M.; Roth, M.; Gonzalez, S.; Thomas-Osip, J.; Krzeminski, W.; Contreras, C.; Maza, J.; González, L.; Huerta, L.; Folatelli, G. N.; Chornock, R.; Filippenko, A. V.; Persson, S. E.; Freedman, W. L.; Koviak, K.; Suntzeff, N. B.; Krisciunas, K. (2009). "Supernova 2003bg: The First Type IIb Hypernova" (pdf). The Astrophysical Journal 703 (2): 1612–1623. arXiv:0908.1783. Bibcode:2009ApJ...703.1612H. doi:10.1088/0004-637X/703/2/1612.
|
|
Created By:
System
|
|
|
|
|