Zobrazeno 1 - 10
of 745
pro vyhledávání: '"Bushby, A. J."'
The details of the dynamo process that is responsible for driving the solar magnetic activity cycle are still not fully understood. In particular, whilst differential rotation provides a plausible mechanism for the regeneration of the toroidal (azimu
Externí odkaz:
http://arxiv.org/abs/2410.08400
Publikováno v:
J. Fluid Mech. 994 (2024) A3
Resistive tearing instabilities are common in fluids that are highly electrically conductive and carry strong currents. We determine the effect of stable stratification on the tearing instability under the Boussinesq approximation. Our results genera
Externí odkaz:
http://arxiv.org/abs/2408.13210
Shear-driven magnetic buoyancy in the solar tachocline: The mean electromotive force due to rotation
The leading theoretical paradigm for the Sun's magnetic cycle is an $\alpha\omega$-dynamo process, in which a combination of differential rotation and turbulent, helical flows produces a large-scale magnetic field that reverses every 11 years. Most $
Externí odkaz:
http://arxiv.org/abs/2301.05067
The presence of acoustic waves in models of compressible flows can present complications for analytical and numerical analysis. Therefore, several methods have been developed to filter out these waves, leading to various "sound-proof" models, includi
Externí odkaz:
http://arxiv.org/abs/2209.13315
Publikováno v:
Boletín de la Sociedad Española de Cerámica y Vidrio, Vol 38, Iss 5, Pp 446-450 (1999)
Nanoindentation techniques have been used to determine the mechanical properties of two well characterised Pb0.88La0.08TiO3 ferroelectric thin films which have been shown to be promising for MEMs applications. Aceramic with the same nominal compositi
Externí odkaz:
https://doaj.org/article/a771175287bb401796fa2778b5f1dc20
Autor:
Chankhanittha, Tammanoon, Johnson, Benjamin, Bushby, Richard J., Butburee, Teera, Khemthong, Pongtanawat, Nanan, Suwat
Publikováno v:
In Journal of Alloys and Compounds 15 December 2024 1008
We use results of shallow-water magnetohydrodynamics (SWMHD) to place estimates on the minimum magnetic field strengths required to cause atmospheric wind variations (and therefore westward venturing hotspots) for a dataset of hot Jupiters (HJs), inc
Externí odkaz:
http://arxiv.org/abs/2107.10848
Magnetically-driven hotspot variations (which are tied to atmospheric wind variations) in hot Jupiters are studied using non-linear numerical simulations of a shallow-water magnetohydrodynamic (SWMHD) system and a linear analysis of equatorial SWMHD
Externí odkaz:
http://arxiv.org/abs/2107.07515
We study dynamo action using numerical simulations of planar Boussinesq convection at rapid rotation (low Ekman numbers, Ek), focusing on subcritical dynamo action in which the dynamo is sustained for Rayleigh numbers, Ra, below the critical Rayleigh
Externí odkaz:
http://arxiv.org/abs/2011.00852
The presence of magnetic fields in many astrophysical objects is due to dynamo action, whereby a part of the kinetic energy is converted into magnetic energy. A turbulent dynamo that produces magnetic field structures on the same scale as the turbule
Externí odkaz:
http://arxiv.org/abs/2003.07997