superkilonova.
A type of extended core-collapse supernova event that results in two supernova explosions, beginning with a hydrogen-rich type II supernova followed by an r-process-rich kilonova. The end of the main-fusing life of a large rapidly rotating star, that results in a core collapse explosion, where the extremely rapid rotation fractures the remnant core resulting in the formation of multiple neutron stars in rapidly decaying orbits, that collide and merge in a second explosion, the kilonova, shortly after the first explosion, the supernova.
Meaning & usage
A type of extended core-collapse supernova event that results in two supernova explosions, beginning with a hydrogen-rich type II supernova followed by an r-process-rich kilonova. The end of the main-fusing life of a large rapidly rotating star, that results in a core collapse explosion, where the extremely rapid rotation fractures the remnant core resulting in the formation of multiple neutron stars in rapidly decaying orbits, that collide and merge in a second explosion, the kilonova, shortly after the first explosion, the supernova.
Where this word comes from
Blend of supernova + kilonova. By surface analysis, super- + kilo- + nova.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.