Imprints of the Jittering Jets Explosion Mechanism in the Morphology of the Supernova Remnant SNR 0540-69.3

Noam Soker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

I identify a point-symmetric structure in recently published VLT/MUSE velocity maps of different elements in a plane along the line of sight at the center of the supernova remnant SNR 0540-69.3, and argue that jittering jets that exploded this core collapse supernova shaped this point-symmetric structure. The four pairs of two opposite clumps that compose this point symmetric structure suggest that two to four pairs of jittering jets shaped the inner ejecta in this plane. In addition, intensity images of several spectral lines reveal a faint strip (the main jet-axis) that is part of this plane of jittering jets and its similarity to morphological features in a few other SNRs and in some planetary nebulae further suggests shaping by jets. My interpretation implies that in addition to instabilities, jets also mix elements in the ejecta of core collapse supernovae. Based on the point-symmetric structure and under the assumption that jittering jets exploded this supernova, I estimate the component of the neutron star natal kick velocity on the plane of the sky to be ≃ 235 km s-1, and at an angle of ≃47° to the direction of the main jet-axis. I analyze this natal kick direction together with 12 other SNRs in the frame of the jittering jets explosion mechanism.

Original languageEnglish
Article number035019
JournalResearch in Astronomy and Astrophysics
Volume22
Issue number3
DOIs
StatePublished - Mar 2022
Externally publishedYes

Keywords

  • (stars:) supernovae: general
  • (stars:) supernovae: individual (SNR 0540-69.3)
  • ISM: supernova remnants
  • stars: jets

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