Zobrazeno 1 - 10
of 23
pro vyhledávání: '"L. J. Silvers"'
Autor:
Abrar A. Ali, L. J. Silvers
Publikováno v:
Geophysical & Astrophysical Fluid Dynamics. 115:207-220
The linear equations of thermal convection in a compressible fluid with non-constant transport coefficients are derived. The criterion for the onset of convection is established, based on linear stability analysis, for a range of different temperatur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53bb75ade054cb241420a921cf9aee35
https://doi.org/10.1080/03091929.2020.1777549
https://doi.org/10.1080/03091929.2020.1777549
Autor:
L. J. Silvers, Abrar A. Ali
In this paper, we explore for the first time the interactions of the net downward, time-dependent, γ-pumping overlying an imposed layer of magnetic fluid, in a polytropic atmosphere. Our calculations show that an equipartition of energy, between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9d93bd87ed5f2a30c145c8ddaa3c9d3
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, ⟨10.1093/mnras/sty2698⟩
Monthly Notices of the Royal Astronomical Society, 2018, ⟨10.1093/mnras/sty2698⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, ⟨10.1093/mnras/sty2698⟩
Monthly Notices of the Royal Astronomical Society, 2018, ⟨10.1093/mnras/sty2698⟩
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8489fc6e2d60c4452c6773b2d1be7c2d
https://hal.archives-ouvertes.fr/hal-01898592
https://hal.archives-ouvertes.fr/hal-01898592
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 426:3349-3359
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:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1ed8b2ba88c618fd8551e6a16ff99b6
https://doi.org/10.1111/j.1365-2966.2012.21920.x
https://doi.org/10.1111/j.1365-2966.2012.21920.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 424:115-127
We perform idealised numerical simulations of magnetic buoyancy instabilities in a model of the solar tachocline. We introduce a simplified model of magnetic flux pumping in an upper layer (the convection zone), and study the effects of its inclusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99eaad6b4fe8fa6eba60600e701bc395
https://doi.org/10.1111/j.1365-2966.2012.21174.x
https://doi.org/10.1111/j.1365-2966.2012.21174.x
Publikováno v:
Proceedings of the International Astronomical Union. 6:218-226
Recently, Silvers, Vasil, Brummell, & Proctor (2009), using numerical simulations, confirmed the existence of a double diffusive magnetic buoyancy instability of a layer of horizontal magnetic field produced by the interaction of a shear velocity fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c260a436f5faeeda03ac3438af2563f1
https://doi.org/10.1017/s1743921311017649
https://doi.org/10.1017/s1743921311017649
Publikováno v:
Monthly Notices Of The Royal Astronomical Society
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1671761e5831e37a745f7974e7d8ae26
https://doi.org/10.1111/j.1365-2966.2009.15455.x
https://doi.org/10.1111/j.1365-2966.2009.15455.x
Publikováno v:
The Astrophysical Journal Letters
Previous theoretical work has speculated about the existence of double-diffusive magnetic buoyancy instabilities of a dynamically evolving horizontal magnetic layer generated by the interaction of forced vertically sheared velocity and a background v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aadb23112e2dc23e67a1fee346ec61a
https://doi.org/10.1088/0004-637x/702/1/l14
https://doi.org/10.1088/0004-637x/702/1/l14
Publikováno v:
The Astrophysical Journal. 678:L137-L140
Nonlinear closure models of the two-dimensional magnetohydrodynamic equations predict that the turbulent diffusivity of magnetic fields in high magnetic Reynolds number flows will be strongly suppressed below the value predicted by simple kinematic m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e876e9b11f1a9d0604193305a4b50089
https://doi.org/10.1086/588654
https://doi.org/10.1086/588654
Autor:
L. J. Silvers
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2008, 385, pp.1036-1044. ⟨10.1111/j.1365-2966.2008.12906.x⟩
Monthly Notices of the Royal Astronomical Society, 2008, 385, pp.1036-1044. ⟨10.1111/j.1365-2966.2008.12906.x⟩
For more than a decade, the so-called shearing box model has been used to study the fundamental local dynamics of accretion discs. This approach has proved to be very useful because it allows high resolution and long term studies to be carried out, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05cf2fa2cfe4fac7d5f9c43cdc6e0b58
https://doi.org/10.1111/j.1365-2966.2008.12906.x
https://doi.org/10.1111/j.1365-2966.2008.12906.x