Magnetic Rayleigh–Taylor Instability in an Experiment Simulating a Solar Loop
A hoop force driven magnetic Rayleigh–Taylor instability (MRTI) is observed in a laboratory experiment that simulates a solar coronal loop. Increase of the axial wavelength λ is observed when the axial magnetic field increases. This scaling is consistent with the theoretical MRTI growth rate γ² = gk – 2(k·B₀)²/µ₀ρ, which implies that if k is parallel to B₀ (i.e., undular mode), the fastest-growing mode has λ = 2π/k = 8πB²₀/µ₀ρg.
© 2020 The American Astronomical Society. Received 2019 November 22; revised 2020 January 10; accepted 2020 January 14; published 2020 January 29. This material is based upon work supported by the NSF Solar Terrestrial Research Program via award grant 1914599 and by the Air Force Office of Scientific Research Space Science Program via award grant FA9550-17-1-0023. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in cooperation with ESA and NSC (Norway).
Published - Zhang_2020_ApJL_889_L32.pdf