Results 11 to 20 of about 182,344 (339)
TANGLED MAGNETIC FIELDS IN SOLAR PROMINENCES [PDF]
The Astrophysical Journal, 2010 Solar prominences are an important tool for studying the structure and evolution of the coronal magnetic field. Here we consider so-called "hedgerow" prominences, which consist of thin vertical threads. We explore the possibility that such prominences are supported by tangled magnetic fields. A variety of different approaches are used.
van Ballegooijen, A. A., Cranmer, S. R.
openaire +4 more sources
The Direct Effect of Toroidal Magnetic Fields on Stellar Oscillations: An Analytical Expression for the General Matrix Element [PDF]
, 2017 Where is the solar dynamo located and what is its modus operandi? These are still open questions in solar physics. Helio- and asteroseismology can help answer them by enabling us to study solar and stellar internal structures through global oscillations.
Kiefer, René +2 more
core +2 more sources
Magnetic Cycles in a Convective Dynamo Simulation of a Young Solar-type Star [PDF]
, 2011 Young solar-type stars rotate rapidly and many are magnetically active; some undergo magnetic cycles similar to the 22-year solar activity cycle. We conduct simulations of dynamo action in rapidly rotating suns with the 3D MHD anelastic spherical ...
Allan Sacha Brun +43 more
core +4 more sources
Effects of Partial Ionization on Magnetic Flux Emergence in the Sun
The Astrophysical Journal, 2023 We have performed 3D numerical simulations to investigate the effect of partial ionization on the process of magnetic flux emergence. In our study, we have modified the single-fluid MHD equations to include the presence of neutrals and have performed two
Georgios Chouliaras +2 more
doaj +1 more source
Convection and dynamo action in B stars [PDF]
, 2010 Main-sequence massive stars possess convective cores that likely harbor strong dynamo action. To assess the role of core convection in building magnetic fields within these stars, we employ the 3-D anelastic spherical harmonic (ASH) code to model ...
Augustson, Kyle C. +2 more
core +1 more source
The Astrophysical Journal, 2023 We analyze the forces that control the dynamic evolution of a flux rope eruption in a three-dimensional radiative magnetohydrodynamic simulation. The confined eruption of the flux rope gives rise to a C8.5 flare. The flux rope rises slowly with an almost
Can Wang +3 more
doaj +1 more source
Probing the internal solar magnetic field through g-modes [PDF]
, 2006 The observation of g-mode candidates by the SoHO mission opens the possibility of probing the internal structure of the solar radiative zone (RZ) and the solar core more directly than possible via the use of the p-mode helioseismology data.
Rashba, T. I. +3 more
core +4 more sources
Solar Coronal Magnetic Fields [PDF]
Symposium - International Astronomical Union, 1993 A short compilation of various radio methods of the determination of magnetic fields in the solar corona is given which, completed by observations in other spectral ranges (e.g. the optical and X-ray ranges), results in a complex picture of the magnetic field.
J. Hildebrandt, B. Kliem, A. Krüger
openaire +1 more source
Magnetic nulls and super-radial expansion in the solar corona [PDF]
, 2017 Magnetic fields in the sun's outer atmosphere -- the corona -- control both solar-wind acceleration and the dynamics of solar eruptions. We present the first clear observational evidence of coronal magnetic nulls in off-limb linearly polarized ...
Burkepile, Joan +7 more
core +3 more sources
The Astrophysical Journal, 2023 The solar magnetic structure changes over the solar cycle. It has a dipole structure during solar minimum, where the open flux extends mainly from the polar regions into the interplanetary space.
Minami Yoshida +2 more
doaj +1 more source