Identifying a jet-shaped point-symmetric morphology in the supernova remnant HB9

@misc{soker2026identifying,
  title = {{Identifying a jet-shaped point-symmetric morphology in the supernova remnant HB9}},
  author = {Noam Soker},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.28428},
  eprint = {2610.28428},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.28428},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Identifying a jet-shaped point-symmetric morphology in the supernova remnant HB9
AU  - Noam Soker
PY  - 2026
DA  - 2026/10/20
PB  - arXiv
DO  - 10.48550/arxiv.2610.28428
UR  - https://arxiv.org/abs/2610.28428
AB  - I identify a point-symmetric morphology in the supernova remnant HB9 (G160.9+2.6), supposedly a core-collapse supernova (CCSN) remnant (CCSNR), and attribute this structure to two or more pairs of jets that exploded the star within the jittering-jets explosion mechanism (JJEM). The pairs of jets that shape the point-symmetric morphology of HB9 are part of a larger number of pairs that exploded the star. The point-symmetric structure is composed of a pair of ears, a pair of ears/nozzles, a pair of dents, and a pair of bright bars. Although these pairs of morphological features are small and the point-symmetric structure is subtle, I consider the identification robust. I use visual inspection to identify the point-symmetric morphology of HB9, a method commonly used to identify jet-shaped, point-symmetric morphologies in other astrophysical objects, such as cooling-flow clusters of galaxies and planetary nebulae. I present arguments for jet-driven shaping rather than CSM shaping. These findings support earlier claims that the JJEM is the primary explosion mechanism of CCSNe.
ER  -