Results 21 to 30 of about 1,589,837 (361)

Solar Coronal Magnetic Fields [PDF]

open access: yesSymposium - 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.
B. Kliem, J. Hildebrandt, A. Krüger
openaire   +2 more sources

Effects of Partial Ionization on Magnetic Flux Emergence in the Sun

open access: yesThe 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

Radiative Magnetohydrodynamic Simulation of the Confined Eruption of a Magnetic Flux Rope: Unveiling the Driving and Constraining Forces

open access: yesThe 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

The Magnetic Field of Solar Spicules [PDF]

open access: yes, 2009
Determining the magnetic field of solar spicules is vital for developing adequate models of these plasma jets, which are thought to play a key role in the thermal, dynamic, and magnetic structure of the chromosphere. Here we report on magnetic spicule properties in a very quiet region of the off-limb solar atmosphere, as inferred from new ...
A. Asensio Ramos   +3 more
openaire   +4 more sources

Small-Scale Solar Magnetic Fields [PDF]

open access: yesSpace Science Reviews, 2008
43 pages, 18 ...
Jan Olof Stenflo   +3 more
openaire   +4 more sources

Which Component of Solar Magnetic Field Drives the Evolution of Interplanetary Magnetic Field over the Solar Cycle?

open access: yesThe 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

Magnetic fields of young solar twins [PDF]

open access: yesAstronomy & Astrophysics, 2016
25 pages, 15 figures, 4 tables; Accepted for publication in Astronomy & ...
Thomas Hackman   +4 more
openaire   +7 more sources

Splitting and Reconstruction of a Solar Filament Caused by Magnetic Emergence and Reconnection

open access: yesThe Astrophysical Journal, 2023
We present observations and interpretation of a nonerupting filament in NOAA active region (AR) 12827 that undergoes splitting and restructuring on 2021 June 4, using the high-resolution data obtained by the New Vacuum Solar Telescope, the Solar Dynamics
Zhike Xue   +6 more
doaj   +1 more source

Helicity of the solar magnetic field [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractHelicity measures complexity in the field. Magnetic helicity is given by a volume integral over the scalar product of magnetic field B and its vector potential A. A direct computation of magnetic helicity in the solar atmosphere is not possible due to unavailability of the observations at different heights and also due to non-uniqueness of A ...
openaire   +4 more sources

Solar mean magnetic field of the chromosphere

open access: yesJournal of Astrophysics and Astronomy, 2023
The Solar Mean Magnetic Field (SMMF) is the mean value of the line of sight (LOS) component of the solar vector magnetic field averaged over the visible hemisphere of the Sun. So far, the studies on SMMF have mostly been confined to the magnetic field measurements at the photosphere. In this study, we calculate and analyse the SMMF using magnetic field
M. Vishnu, K. Nagaraju, Harsh Mathur
openaire   +2 more sources

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