Discovery of Kolmogorov-like turbulence in the inner shell of SNR HB 9
Abstract
We investigated the scaling relation of the magnetohydrodynamic turbulence in the inner and outer shells of the supernova remnant HB 9 using multi-tracers. For the eastern inner shell section, one-dimensional structure function and power spectrum analyses of the radio total intensity, H-alpha emission, and polarized intensity consistently show a Kolmogorov-like scaling of l^2/3 over the inertial range. The two-dimensional power spectrum for the entire inner region follows k^-8/3 of all tracers, including the polarization gradient. It indicates that fully developed, trans-Alfvenic Kolmogorov turbulence is present in the inner shell of HB 9. We estimated the strength of random magnetic field therein from the low fractional polarization (5%), and obtained a upper limit delta B of 18 micro G. The turbulence in the inner shock shell is most likely driven by the Richtmyer-Meshkov instability.
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BibTeX
@misc{xiao2026discovery,
title = {{Discovery of Kolmogorov-like turbulence in the inner shell of SNR HB 9}},
author = {Li Xiao and Ming Zhu and Xiao-Hui Sun and Wolfgang Reich and Patricia Reich},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.34421},
eprint = {2609.34421},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.34421},
}
RIS
TY - UNPB
TI - Discovery of Kolmogorov-like turbulence in the inner shell of SNR HB 9
AU - Li Xiao
AU - Ming Zhu
AU - Xiao-Hui Sun
AU - Wolfgang Reich
AU - Patricia Reich
PY - 2026
DA - 2026/09/28
PB - arXiv
DO - 10.48550/arxiv.2609.34421
UR - https://arxiv.org/abs/2609.34421
AB - We investigated the scaling relation of the magnetohydrodynamic turbulence in the inner and outer shells of the supernova remnant HB 9 using multi-tracers. For the eastern inner shell section, one-dimensional structure function and power spectrum analyses of the radio total intensity, H-alpha emission, and polarized intensity consistently show a Kolmogorov-like scaling of l^2/3 over the inertial range. The two-dimensional power spectrum for the entire inner region follows k^-8/3 of all tracers, including the polarization gradient. It indicates that fully developed, trans-Alfvenic Kolmogorov turbulence is present in the inner shell of HB 9. We estimated the strength of random magnetic field therein from the low fractional polarization (5%), and obtained a upper limit delta B of 18 micro G. The turbulence in the inner shock shell is most likely driven by the Richtmyer-Meshkov instability.
ER -