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The nature of ASASSN-15lh is disputed. The most popular explanations are that it is the most luminous type I supernova (hypernova) ever observed, or a tidal disruption event around a 10 8 M ☉ supermassive black hole. [5] Other hypotheses include: gravitational lensing; a quark nova inside a Wolf–Rayet star; or a rapid magnetar spindown.
SN 1054 remnant (Crab Nebula)A supernova is an event in which a star destroys itself in an explosion which can briefly become as luminous as an entire galaxy.This list of supernovae of historical significance includes events that were observed prior to the development of photography, and individual events that have been the subject of a scientific paper that contributed to supernova theory.
By 2000, the Lick program resulted in the discovery of 96 supernovae, making it the world's most successful Supernova search program. [52] In the late 1990s it was proposed that recent supernova remnants could be found by looking for gamma rays from the decay of titanium-44. This has a half-life of 90 years and the gamma rays can traverse the ...
Powerful Webb Telescope captures photos of one of the earliest supernova ever seen. Greg Wehner. January 15, 2025 at 6:47 PM ... with features appearing like grains and knots found in a cut of wood.
The most luminous supernova ever recorded is ASASSN-15lh, at a distance of 3.82 gigalight-years. It was first detected in June 2015 and peaked at 570 billion L ☉ , which is twice the bolometric luminosity of any other known supernova. [ 35 ]
This was a supernova, and its remnant (SNR) is catalogued as PKS 1459-41 [NB 4] [NB 5] [NB 1] [29] Most luminous star LGGS J004246.86+413336.4: 2022 L= 19,953,000 L Sun [30] List of most luminous stars: Least luminous star 2MASS J0523−1403: 2013 L=0.000126L Sun [NB 2] [NB 7] [31] Most luminous star in a transient event Progenitor of GRB ...
The electromagnetic energy released by these events varies from comparable to other type Ic supernova, to some of the most luminous supernovae known such as SN 1999as. [13] [14] The archetypal hypernova, SN 1998bw, was associated with GRB 980425.
A year after the event, radio emission from the supernova was detected using the Very Large Array. The host galaxy shows a redshift of z equal to 0.022, making this the most distant radio supernova detected at that time. It was also one of the most luminous radio supernova discovered.