Further evidence for early lunar magnetism from troctolite 76535
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2016je005154
Abstract: The earliest history of the lunar dynamo is largely unknown and has important implications for the thermal state of the Moon and the physics of dynamo generation. The lunar sample with the oldest known paleomagnetic… read more here.
Keywords: lunar; field; troctolite 76535; dynamo ... See more keywords
A Model of a Tidally Synchronized Solar Dynamo
Sign Up to like & getrecommendations! Published in 2019 at "Solar Physics"
DOI: 10.1007/s11207-019-1447-1
Abstract: We discuss a solar dynamo model of Tayler–Spruit type whose Ω$\Omega $-effect is conventionally produced by a solar-like differential rotation but whose α$\alpha $-effect is assumed to be periodically modulated by planetary tidal forcing. This… read more here.
Keywords: dynamo model; model tidally; dynamo; tidally synchronized ... See more keywords
Hysteresis Near the Transition of the Large-Scale Dynamo in the Presence of the Small-Scale Dynamo
Sign Up to like & getrecommendations! Published in 2024 at "Solar Physics"
DOI: 10.1007/s11207-024-02360-5
Abstract: In the Sun and solar-type stars, there is a critical dynamo number for the operation of a large-scale dynamo, below which the dynamo ceases to operate. This region is known as the subcritical region. Previous… read more here.
Keywords: small scale; presence small; scale; scale dynamo ... See more keywords
Analyses of Features of Magnetic Cycles at Different Amounts of Dynamo Supercriticality: Solar Dynamo Is About Two Times Critical
Sign Up to like & getrecommendations! Published in 2025 at "Solar Physics"
DOI: 10.1007/s11207-025-02428-w
Abstract: The growth of a large-scale magnetic field in the Sun and stars is usually possible when the dynamo number (D)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$(D)$\end{document} is above a critical value Dc\documentclass[12pt]{minimal}… read more here.
Keywords: dynamo supercriticality; features magnetic; dynamo two; usepackage ... See more keywords
Nonkinematic solar dynamo models with double-cell meridional circulation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Atmospheric and Solar-Terrestrial Physics"
DOI: 10.1016/j.jastp.2018.07.010
Abstract: Abstract Employing the standard solar interior model as input we construct a dynamically-consistent nonlinear dynamo model that takes into account the detailed description of the Λ - effect, turbulent pumping, magnetic helicity balance, and magnetic… read more here.
Keywords: double cell; cell meridional; meridional circulation; dynamo ... See more keywords
Large-scale-vortex dynamos in planar rotating convection
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.56
Abstract: Several recent studies have demonstrated how large-scale vortices may arise spontaneously in rotating planar convection. Here, we examine the dynamo properties of such flows in rotating Boussinesq convection. For moderate values of the magnetic Reynolds… read more here.
Keywords: large scale; scale vortex; dynamo; convection ... See more keywords
Long-term Doppler imaging of the star XX Trianguli indicates chaotic non-periodic dynamo
Sign Up to like & getrecommendations! Published in 2024 at "Nature Communications"
DOI: 10.1038/s41467-024-54329-4
Abstract: Sunspots are the most well-known manifestations of solar magnetic fields and exhibit a range of phenomena related to the interior dynamo. Starspots are the direct analogs of sunspots on other stars but with the big… read more here.
Keywords: star; doppler; long term; doppler imaging ... See more keywords
A reinforced lunar dynamo recorded by Chang’e-6 farside basalt
Sign Up to like & getrecommendations! Published in 2024 at "Nature"
DOI: 10.1038/s41586-024-08526-2
Abstract: The evolution of the lunar dynamo is essential for deciphering the deep interior structure, thermal history and surface environment of the Moon1, 2, 3–4. Previous palaeomagnetic investigations on samples returned from the nearside of the… read more here.
Keywords: field; lunar dynamo; reinforced lunar; farside ... See more keywords
Possible approach to detecting the mysterious Saturnian convective dynamo through gravitational sounding
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202038906
Abstract: Context.Planetary dynamo research is mathematically and numerically difficult. Forward calculations are numerically expensive and subject to much uncertainty in key magnetohydrodynamics parameters. For a gaseous planet such as Saturn, even the precise location of its… read more here.
Keywords: dynamo; gravitational sounding; convective dynamo; mission ... See more keywords
Dynamo modelling for cycle variability and occurrence of grand minima in Sun-like stars: rotation rate dependence
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1105
Abstract: Like the solar cycle, stellar activity cycles are also irregular. Observations reveal that rapidly rotating (young) Sun-like stars exhibit a high level of activity with no Maunder-like grand minima and rarely display smooth regular activity… read more here.
Keywords: sun like; stars rotation; dynamo; minima ... See more keywords
Spatio-temporal non-localities in a solar-like mean-field dynamo
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1150
Abstract: The scale separation approximation, which is in the base of the solar mean field dynamo models, can be hardly justified both by observations and theoretical applications to astrophysical dynamos. The general expression for the mean… read more here.
Keywords: field dynamo; dynamo; electromotive force; model ... See more keywords