jet cocoon

noun

A cloud of gas that obscures the poles of a star undergoing hypernova (HN), which gets heated by the polar jet escaping the hypernova progenitor star (hnp), and may absorb the energy of a weak gamma-ray burst (GRB), leaving an observable HN lacking the associated GRB, or be penetrated by a stronger GRB, giving a HN with an associated GRB.

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Meanings

nounjet cocoon (plural jet cocoons)

plural jet cocoons

  1. supernovae astronomyA cloud of gas that obscures the poles of a star undergoing hypernova (HN), which gets heated by the polar jet escaping the hypernova progenitor star (hnp), and may absorb the energy of a weak gamma-ray burst (GRB), leaving an observable HN lacking the associated GRB, or be penetrated by a stronger GRB, giving a HN with an associated GRB.
Cite this entry
APA

jet cocoon. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/jet%20cocoon

MLA

“jet cocoon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/jet%20cocoon. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “jet cocoon,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/jet%20cocoon.

Source: jet cocoon on Wiktionary, CC BY-SA 4.0.