Eun-jin Kim

Generation of density perturbations by primordial magnetic fields

We study the generation and evolution of density perturbations and peculiar velocities due to primordial magnetic fields. We assume that a random magnetic field was present before recombination and follow the fields effect on the baryon fluid starting at recombination. We find that magnetic fields generate growing density perturbations on length scales larger than the magnetic Jeans length,

Dynamics of zonal flow saturation in strong collisionless drift wave turbulence

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Network of mutually repressive metastasis regulators can promote cell heterogeneity and metastatic transitions.

, and damped oscillations for scales smaller than

Angular momentum transport by internal gravity waves

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Mean shear flows, zonal flows, and generalized Kelvin–Helmholtz modes in drift wave turbulence: A minimal model for L→H transition

. For small wavenumbers

Kinetic helicity, magnetic helicity and fast dynamo action☆

k

Investigations of the role of nonlinear couplings in structure formation and transport regulation: experiment, simulation, and theory

(large length scales), we find the magnetic field-induced density power spectrum generally scales as

On Turbulent Reconnection

k^4

Gravity Wave-driven Flows in the Solar Tachocline

. We derive the magnetic Jeans length explicitly by including the back--reaction of the velocity field onto the magnetic field by decomposing the magnetic field into a force-free background field and perturbations about it. Depending on the strength of the magnetic field and the ultraviolet cutoff of its spectrum, structure can be generated on small or intermediate scales early in the history of the universe. For a present {\it rms} magnetic field of

Turbulent transport and equilibrium profiles in two-dimensional magnetohydrodynamics with background shear

10^{-10}