SIMBAD references

2023MNRAS.518.1185B - Mon. Not. R. Astron. Soc., 518, 1185-1194 (2023/January-1)

Turbulence and anomalous resistivity inside near-Earth magnetic clouds.

BHATTACHARJEE D., SUBRAMANIAN P., NIEVES-CHINCHILLA T. and VOURLIDAS A.

Abstract (from CDS):

We use in situ data from the Wind spacecraft (https://wind.nasa.gov/) to survey the amplitude of turbulent fluctuations in the proton density and total magnetic field inside a large sample of near-Earth magnetic clouds (MCs) associated with coronal mass ejections (CMEs) from the Sun. We find that the most probable value of the modulation index for proton density fluctuations (δnp/np) inside MCs ranges from 0.13 to 0.16, while the most probable values for the modulation index of the total magnetic field fluctuations (δB/B) range from 0.04 to 0.05. We also find that the most probable value of the Mach number fluctuations (δM) inside MCs is ≈0.1. The anomalous resistivity inside the near-Earth MCs arising from electron scattering due to turbulent magnetic field fluctuations exceeds the (commonly used) Spitzer resistivity by a factor of ≈500-1000. The enhanced Joule heating arising from this anomalous resistivity could impact our understanding of the energetics of CME propagation.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): MHD - turbulence - methods: statistical - Sun: coronal mass ejections (CMEs)

Simbad objects: 1

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