The orbital evolution of dust particles initially located outside the equatorial plane is considered. The averaging method is used to solve equations of motion...

We report on the dynamical interaction of quiet-Sun magnetic fields and granular convection in the solar photosphere as seen by Sunrise. We use high spatial...

In contrast to our understanding of density field tracers, the modeling of direct statistics pertaining to the cosmic velocity field remains open to significant...

Context: Small-scale magnetic fields play an important role in the structure and the dynamics of the solar atmosphere. Aims: This study aims at revealing the...

We present high resolution (λ/Δ λ = 49 000) échelle spectra of the intermediate mass, pre-main sequence stars BF Ori, SV Cep, WW Wul and XY Per. The spectra...

The spectrum corresponding to the emission of radiation from a dust distribution dominated by the dynamical action of the Poynting Robertson Effect is discussed...

In most papers dealing with random motions and diffusion of small magnetic elements in the photosphere, the convective flows and in particular the granulation...

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We present results from numerical simulations of nonlinear MHD dynamo action produced by three-dimensional flows that become turbulent for high values of the...