Results 21 to 30 of about 228,421 (149)
Magnetic flux captured by an accretion disk
, 2005 We suggest a possible mechanism of efficient transport of the large-scale external magnetic flux inward through a turbulent accretion disk. The outward drift by turbulent diffusion which limits the effectiveness of this process is reduced if the external
Spruit, H. C., Uzdensky, Dmitri A.
core +1 more source
Antiprotons from Dark Matter: Effects of a Position-Dependent Diffusion Coefficient
, 2011 Energetic antiprotons in cosmic rays can serve as an important indirect signature of dark matter. Conventionally, the antiproton flux from dark matter decays or annihilations is calculated by solving the transport equation with a space-independent ...
Bibhushan Shakya +2 more
core +1 more source
Transient convective diffusion to a disk electrode [PDF]
Journal of Electroanalytical Chemistry, 1974 Summary Mass transfer to a rotating disk electrode is calculated at large times after aconcentration step or a flux step at the surface. Radial dependence of concentration is ignored. Further application of results to treat more complex boundary conditions is discussed.
Kemal Nişanciolu, John Newman
openaire +2 more sources
MAGNETIC BRAKING AND PROTOSTELLAR DISK FORMATION: AMBIPOLAR DIFFUSION [PDF]
The Astrophysical Journal, 2009 16 pages, 4 ...
Mellon, Richard R., Li, Zhi-Yun
openaire +2 more sources
Suppression of type I migration by disk winds
, 2015 Planets less massive than Saturn tend to rapidly migrate inward in protoplanetary disks. This is the so-called type I migration. Simulations attempting to reproduce the observed properties of exoplanets show that type I migration needs to be ...
Guillot, Tristan +2 more
core +1 more source
Stochastic Loewner evolution in multiply connected domains [PDF]
, 2004 We construct radial stochastic Loewner evolution in multiply connected domains, choosing the unit disk with concentric circular slits as a family of standard domains.
Bauer, Robert O., Friedrich, Roland M.
core +3 more sources
Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks
, 2017 We investigate the formation of hot and massive circumplanetary disks (CPDs) and the orbital evolution of satellites formed in these disks. Because of the comparatively small size-scale of the sub-disk, quick magnetic diffusion prevents the ...
Fujii, Yuri I. +3 more
core +1 more source
, 2013 [Abridged] Theoretical and numerical studies of star formation have shown that magnetic field (B) has a strong influence on both disk formation and fragmentation; even a relatively low B can prevent these processes. However, very few studies investigated
Ciardi, Andrea +3 more
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Parker-Jeans Instability of Gaseous Disks Including the Effect of Cosmic Rays [PDF]
, 2005 We use linear analysis to examine the effect of cosmic rays (CRs) on the Parker-Jeans instability of magnetized self-gravitating gaseous disks. We adopt a slab equilibrium model in which the gravity (including self-gravity) is perpendicular to the mid ...
Chung‐Ming Ko +8 more
core +1 more source
Mean exit time for surface-mediated diffusion: spectral analysis and asymptotic behavior
, 2014 We consider a model of surface-mediated diffusion with alternating phases of pure bulk and surface diffusion. For this process, we compute the mean exit time from a disk through a hole on the circle.
Bénichou, O. +5 more
core +3 more sources