Angular momentum transport in a contracting stellar radiative zone embedded in a large scale magnetic field
arXiv:2201.02645 · doi:10.1051/0004-6361/202141613
Abstract
Some contracting or expanding stars are thought to host a large-scale magnetic field in their radiative interior. By interacting with the contraction-induced flows, such fields may significantly alter the rotational history of the star. They thus constitute a promising way to address the problem of angular momentum transport during the rapid phases of stellar evolution. In this work, we aim at studying the interplay between flows and magnetic fields in a contracting radiative zone. We propose a scenario that may account for the post-main sequence evolution of solar-like stars, in which a quasi-solid rotation can be maintained by a large-scale magnetic field during a contraction timescale. Then, an axisymmetric instability would destroy this large-scale structure and enables the differential rotation to set in. Such a contraction driven instability could also be at the origin of the observed dichotomy between strongly and weakly magnetic intermediate-mass stars.
arXiv comment31 pages, 29 figures, 3 tables, accepted for publication in Astronomy & Astrophysics
References in corpus (48)
- Dynamo action by differential rotation in a stably stratified stellar interior
- Magnetic fields of non-degenerate stars
- A fossil origin for the magnetic fields of A-stars and white dwarfs
- Improved angular momentum evolution model for solar-like stars
- Slowing the Spins of Stellar Cores
- Seismic constraints on the radial dependence of the internal rotation profiles of six Kepler subgiants and young red giants
- Seismic diagnostics for transport of angular momentum in stars 1. Rotational splittings from the PMS to the RGB
- Weak magnetic fields in Ap/Bp stars: Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy
- Angular momentum transport within evolved low-mass stars
- A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements
- Characterization of the power excess of solar-like oscillations in red giants with Kepler
- Angular momentum transport in stellar interiors constrained by rotational splittings of mixed modes in red giants
- Asteroseismology Can Reveal Strong Internal Magnetic Fields in Red Giant Stars
- Simulations of core convection in rotating A-type stars: Magnetic dynamo action
- Experimental evidence for magnetorotational instability in a helical magnetic field
- New type of magneto-rotational instability in cylindrical Taylor-Couette flow
- Effects of compressibility on driving zonal flow in gas giants
- A prevalence of dynamo-generated magnetic fields in the cores of intermediate-mass stars
- Magnetic spots on hot massive stars
- Understanding angular momentum transport in red giants: the case of KIC 7341231
- Discovery of the pre-main sequence progenitors of the magnetic Ap/Bp stars?
- Detection of a weak surface magnetic field on Sirius A: are all tepid stars magnetic ?
- The Magnetic Furnace: Intense Core Dynamos in B-stars
- The rapid rotation and complex magnetic field geometry of Vega
- Asteroseismic signatures of evolving internal stellar magnetic fields
- Local Axisymmetric Diffusive Stability of Weakly-Magnetized, Differentially-Rotating, Stratified Fluids
- Dipole modes with depressed amplitudes in red giants are mixed modes
- Angular momentum transport efficiency in post-main sequence low-mass stars
- Seismic evidence for near solid-body rotation in two Kepler subgiants and implications for angular momentum transport
- Dynamics of the solar tachocline II: the stratified case
- On the penetration of meridional circulation below the solar convection zone
- Asteroseismology of evolved stars to constrain the internal transport of angular momentum. I. Efficiency of transport during the subgiant phase
- Detection of ultra-weak magnetic fields in Am stars: beta UMa and theta Leo
- Magnetic signatures on mixed-mode frequencies. I. An axisymmetric fossil field inside the core of red giants
- Local instabilities in magnetized rotational flows: A short-wavelength approach
- Suppression of quadrupole and octupole modes in red giants observed by Kepler
- The angular momentum transport by unstable toroidal magnetic fields
- Stability and instability of hydromagnetic Taylor-Couette flows
- Excitation of gravity waves by fingering convection, and the formation of compositional staircases in stellar interiors
- 3D evolution of magnetic fields in a differentially rotating stellar radiative zone
- Dynamics of the solar tachocline III: Numerical solutions of the Gough and McIntyre model
- On the Penetration of Meridional Circulation below the Solar Convection Zone II: Models with Convection Zone, the Taylor-Proudman constraint and Applications to Other Stars
- On rotationally driven meridional flows in stars
- Interplay between magnetic fields and differential rotation in a stably stratified stellar radiative zone
- Transport by meridional circulations in solar-type stars
- The dichotomy between strong and ultra-weak magnetic fields among intermediate-mass stars
- Spin-down dynamics of magnetized solar-type stars
- A self-consistent model of the solar tachocline
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- 30 to 100-kG magnetic fields in the cores of red giant stars
- Strong magnetic fields detected in the cores of 11 red giant stars using gravity-mode period spacings
- MRI-driven dynamos in protoneutron stars
- Asteroseismic Signatures of Core Magnetism and Rotation in Hundreds of Low-Luminosity Red Giants
- Magnetic Webs in Stellar Radiative Zones
- Conversion and Damping of Nonaxisymmetric Internal Gravity Waves in Magnetized Stellar Cores
- Near-critical magnetic fields in Kepler red giants
- Near-degeneracy effects in Quadrupolar Mixed Modes. From an Asymptotic Description to Data Fitting