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pro vyhledávání: '"Silvers, L. J."'
Complex mixing and magnetic field generation occurs within stellar interiors particularly where there is a strong shear flow. To obtain a comprehensive understanding of these processes, it is necessary to study the complex dynamics of shear regions.
Externí odkaz:
http://arxiv.org/abs/1810.01706
Autor:
Witzke, V., Silvers, L. J.
In stellar interiors shear flows play an important role in many physical processes. So far helioseismology provides only large-scale measurements, and so the small-scale dynamics remains insufficiently understood. To draw a connection between observa
Externí odkaz:
http://arxiv.org/abs/1611.10131
Shear flows are ubiquitous in astrophysical objects including planetary and stellar interiors, where their dynamics can have significant impact on thermo-chemical processes. Investigating the complex dynamics of shear flows requires numerical calcula
Externí odkaz:
http://arxiv.org/abs/1608.07608
Publikováno v:
A&A 577, A76 (2015)
Shear flows have an important impact on the dynamics in an assortment of different astrophysical objects including accreditation discs and stellar interiors. Investigating shear flow instabilities in a polytropic atmosphere provides a fundamental und
Externí odkaz:
http://arxiv.org/abs/1503.02790
In this paper we present numerical simulations of rapidly-rotating Rayleigh-B\'enard convection in the Boussinesq approximation with stress-free boundary conditions. At moderately low Rossby number and large Rayleigh number, we show that a large-scal
Externí odkaz:
http://arxiv.org/abs/1408.6483
We here report calculations of magnetic buoyancy instabilities of a sheared magnetic layer where two separate zones are unstable. The idea is to study the possible generation of large-scale helical structures which could then rise through a stellar c
Externí odkaz:
http://arxiv.org/abs/1210.7999
Publikováno v:
Mon. Not. R. Astron. Soc. 426, pp.3349-3359 (2012)
We consider the three-dimensional instability of a layer of horizontal magnetic field in a polytropic atmosphere where, contrary to previous studies, the field lines in the initial state are not unidirectional. We show that if the twist is initially
Externí odkaz:
http://arxiv.org/abs/1208.4787
Motivated by the interface model for the solar dynamo, this paper explores the complex magnetohydrodynamic interactions between convective flows and shear-driven instabilities. Initially, we consider the dynamics of a forced shear flow across a conve
Externí odkaz:
http://arxiv.org/abs/0907.5068
Publikováno v:
Phys.Lett.A373:69-75,2008
It is believed that some stars have two or more convection zones in close proximity near to the stellar photosphere. These zones are separated by convectively stable regions that are relatively narrow. Due to the close proximity of these regions it i
Externí odkaz:
http://arxiv.org/abs/0810.5279
Autor:
Silvers, L. J.
Magnetic fields are known to reside in many astrophysical objects and are now believed to be crucially important for the creation of phenomena on a wide variety of scales. However, the role of the magnetic field in the bodies that we observe has not
Externí odkaz:
http://arxiv.org/abs/0808.1118