The DOI matches its Crossref record; 51 of the 51 references it cites were found in a registry or an index.
Simulations of Dynamo Action in Fully Convective Stars
Open accessAbstract
We present three-dimensional nonlinear magnetohydrodynamic simulations of the interiors of fully convective M dwarfs. Our models consider 0.3 solar-mass stars using the Anelastic Spherical Harmonic code, with the spherical computational domain extending from 0.08 to 0.96 times the overall stellar radius. Like previous authors, we find that fully convective stars can generate kG-strength magnetic fields (in rough equipartition with the convective flows) without the aid of a tachocline of shear. Although our model stars are everywhere unstably stratified, the amplitudes and typical pattern sizes of the convective flows vary strongly with radius, with the outer regions of the stars hosting vigorous convection and field amplification while the deep interiors are more quiescent. Modest differential rotation is established in hydrodynamic calculations, but—unlike in some prior work—strongly quenched in MHD simulations because of the Maxwell stresses exerted by the dynamo-generated magnetic fields. Despite the lack of strong differential rotation, the magnetic fields realized in the simulations possess significant mean (axisymmetric) components, which we attribute partly to the strong influence of rotation on the slowly overturning flows.
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Cites
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Rotation, convection, and magnetic activity in lower main-sequence stars
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Astrophysical magnetic fields and nonlinear dynamo theory
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The Topology of the Sun's Magnetic Field and the 22-YEAR Cycle.
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The Angular Momentum of the Solar Wind
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Cited by
Stellar Flares from the First TESS Data Release: Exploring a New Sample of M Dwarfs
Günther, M. N., Zhan, Z., Seager, S., Rimmer, P. B., Ranjan, S., Stassun, K. G., Oelkers, R. J., Daylan, T., Newton, E., Kristiansen, M. H., et al. (2020) · The Astronomical Journal · doi:10.3847/1538-3881/ab5d3a · Cited by 341
The habitability of planets orbiting M-dwarf stars
Shields, A. L., Ballard, S., & Johnson, J. A. (2016) · Physics Reports · doi:10.1016/j.physrep.2016.10.003 · Cited by 319
The stellar rotation–activity relationship in fully convective M dwarfs
Wright, N. J., Newton, E. R., Williams, P. K. G., Drake, J. J., & Yadav, R. K. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty1670 · Cited by 284
THE ROTATION AND GALACTIC KINEMATICS OF MID M DWARFS IN THE SOLAR NEIGHBORHOOD
Newton, E. R., Irwin, J., Charbonneau, D., Berta-Thompson, Z. K., Dittmann, J. A., & West, A. A. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/821/2/93 · Cited by 279
Chromospheric Activity, Rotation, and Rotational Braking in M and L Dwarfs
Reiners, A., & Basri, G. (2008) · The Astrophysical Journal · doi:10.1086/590073 · Cited by 259
Metadata
- Authors
- Browning, M. K.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2008-04
- Volume
- 676
- Issue
- 2
- Pages
- 1262-1280
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1968505257
- Cited by
- 338
- References
- 51
- FWCI
- 14.54
- Type
- journal article
- Language
- en
- Open access
- bronze
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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