Simulating jets from a neutron star companion hours after a core-collapse supernova

Muhammad Akashi, Noam Soker

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We conduct three-dimensional hydrodynamical simulations to explore the interaction of the jets that a neutron star (NS) companion to a type Ic or type Ib core-collapse supernova (CCSN) launches a few hours after explosion with the ejecta of the CCSN. We assume that an NS companion at 5 R from the exploding star accretes mass from the slower inner ejecta through an accretion disk, and that the disk launches two opposite jets. Although the energy of the jets is only about one percent of the total energy of the ejecta, it is comparable to the energy of the slower inner part of the ejecta. We find that the jets inflate one low-density hot bubble to one side of the ejecta, and that this bubble expands to influence ejecta gas up to expansion velocities of vej ≃ 3500 km s-1. The postshock jets' material develops a large meridional flow and small vortexes. The boundary between the ejecta and jets' postshock gases is unstable. The instabilities and vortexes mix jets' gas with the ejecta. We expect such a hot bubble to contribute to the light curve of CCSNe that are progenitors of binary NS systems, in particular to observers on the side of the bubble.

Original languageEnglish
Article number53
JournalAstrophysical Journal
Issue number1
StatePublished - 20 Sep 2020


  • Compact binary stars (283)
  • High energy astrophysics (739)
  • Interacting binary stars (801)
  • Jets (870)
  • Massive stars (732)
  • Neutron stars (1108)
  • Supernova dynamics (1664)
  • Type Ib supernovae (1729)
  • Type Ic supernovae (1730)


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