Search Results - "Browning, Matthew K."
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Magnetism, dynamo action and the solar-stellar connection
Published in Living reviews in solar physics (2017)“…The Sun and other stars are magnetic: magnetism pervades their interiors and affects their evolution in a variety of ways. In the Sun, both the fields…”
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Magnetic Cycles in a Convective Dynamo Simulation of a Young Solar-type Star
Published in The Astrophysical journal (10-04-2011)“…Young solar-type stars rotate rapidly and many are magnetically active. Some appear to undergo magnetic cycles similar to the 22 yr solar activity cycle. We…”
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Persistent Magnetic Wreaths in a Rapidly Rotating Sun
Published in The Astrophysical journal (01-03-2010)“…When our Sun was young it rotated much more rapidly than now. Observations of young, rapidly rotating stars indicate that many possess substantial magnetic…”
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Helicity inversion in spherical convection as a means for equatorward dynamo wave propagation
Published in Monthly notices of the Royal Astronomical Society (21-02-2016)“…We discuss here a purely hydrodynamical mechanism to invert the sign of the kinetic helicity, which plays a key role in determining the direction of…”
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Dynamo Action in the Solar Convection Zone and Tachocline: Pumping and Organization of Toroidal Fields
Published in The Astrophysical journal (10-09-2006)“…We present the first results from three-dimensional spherical shell simulations of magnetic dynamo action realized by turbulent convection penetrating downward…”
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Simulations of Core Convection in Rotating A-Type Stars: Magnetic Dynamo Action
Published in The Astrophysical journal (10-08-2005)“…Core convection and dynamo activity deep within rotating A-type stars of 2 M sub( )are studied with three-dimensional nonlinear simulations. Our modeling…”
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Simulations of Dynamo Action in Fully Convective Stars
Published in The Astrophysical journal (01-04-2008)“…We present three-dimensional nonlinear magnetohydrodynamic simulations of the interiors of fully convective M dwarfs. Our models consider 0.3 solar- mass stars…”
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Convection with misaligned gravity and rotation: simulations and rotating mixing length theory
Published in Monthly notices of the Royal Astronomical Society (01-04-2020)“…ABSTRACT We present numerical simulations, using two complementary set-ups, of rotating Boussinesq thermal convection in a three-dimensional Cartesian geometry…”
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The Radius and Entropy of a Magnetized, Rotating, Fully Convective Star: Analysis with Depth-dependent Mixing Length Theories
Published in The Astrophysical journal (01-04-2018)“…Some low-mass stars appear to have larger radii than predicted by standard 1D structure models; prior work has suggested that inefficient convective heat…”
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Simulations of Solar and Stellar Dynamos and Their Theoretical Interpretation
Published in Space science reviews (01-10-2023)“…We review the state of the art of three dimensional numerical simulations of solar and stellar dynamos. We summarize fundamental constraints of numerical…”
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Viscous dissipation and dynamics in simulations of rotating, stratified plane-layer convection
Published in Monthly notices of the Royal Astronomical Society (15-02-2024)“…ABSTRACT Convection in stars and planets must be maintained against viscous and Ohmic dissipation. Here, we present the first systematic investigation of…”
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THEORETICAL LIMITS ON MAGNETIC FIELD STRENGTHS IN LOW-MASS STARS
Published in The Astrophysical journal (20-02-2016)“…ABSTRACT Observations have suggested that some low-mass stars have larger radii than predicted by 1D structure models. Some theoretical models have invoked…”
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MODELING THE RISE OF FIBRIL MAGNETIC FIELDS IN FULLY CONVECTIVE STARS
Published in The Astrophysical journal (20-08-2016)“…ABSTRACT Many fully convective stars exhibit a wide variety of surface magnetism, including starspots and chromospheric activity. The manner by which bundles…”
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Effects of Fossil Magnetic Fields on Convective Core Dynamos in A-type Stars
Published in The Astrophysical journal (01-11-2009)“…The vigorous magnetic dynamo action achieved within the convective cores of A-type stars may be influenced by fossil magnetic fields within their radiative…”
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Rapidly Rotating Suns and Active Nests of Convection
Published in The Astrophysical journal (20-12-2008)“…In the solar convection zone, rotation couples with intensely turbulent convection to drive a strong differential rotation and achieve complex magnetic dynamo…”
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Simulations of Core Convection in Rotating A-Type Stars: Differential Rotation and Overshooting
Published in The Astrophysical journal (20-01-2004)“…We present the results of three-dimensional simulations of core convection within A-type stars of 2 M sub(o), at a range of rotation rates. We consider the…”
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A Far Ultraviolet Spectroscopic Explorer Survey of Interstellar Molecular Hydrogen in the Small and Large Magellanic Clouds
Published in The Astrophysical journal (20-02-2002)Get full text
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Inferring Physical Conditions in Interstellar Clouds of H2
Published in The Astrophysical journal (10-01-2003)Get full text
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Inferring Physical Conditions in Interstellar Clouds of H 2
Published in The Astrophysical journal (10-01-2003)Get full text
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Viscous Dissipation and Dynamics in Simulations of Rotating, Stratified Plane-layer Convection
Published 22-01-2024“…Convection in stars and planets must be maintained against viscous and Ohmic dissipation. Here, we present the first systematic investigation of viscous…”
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