Results 1 to 10 of about 19,548 (215)
Solar Force-free Magnetic Fields [PDF]
Living Reviews in Solar Physics, 2012 The structure and dynamics of the solar corona is dominated by the magnetic field. In most areas in the corona magnetic forces are so dominant that all non-magnetic forces like plasma pressure gradient and gravity can be neglected in the lowest order ...
Thomas Wiegelmann, Takashi Sakurai
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Data-driven modeling of solar coronal magnetic field evolution and eruptions [PDF]
The Innovation, 2022 Magnetic fields play a fundamental role in the structure and dynamics of the solar corona. As they are driven by their footpoint motions on the solar surface, which transport energy from the interior of the Sun into its atmosphere, the coronal magnetic ...
Chaowei Jiang +3 more
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Physics of the Earth and Planetary Interiors, 2011 This review provides an introduction to the generation and evolution of the Sun's magnetic field, summarising both observational evidence and theoretical models. The eleven year solar cycle, which is well known from a variety of observed quantities, strongly supports the idea of a large-scale solar dynamo.
Hood, Alan W., Hughes, David W.
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Rotational Components of the Sun’s Mean Field
The Astrophysical Journal, 2023 This paper uses wavelet transforms to look for the rotational frequencies of the Sun’s mean line-of-sight magnetic field. For a sufficiently high wavelet frequency, the spectra of the dipole, quadrupole, and hexapole field components each show a time ...
Neil R. Sheeley Jr.
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Small-Scale Solar Magnetic Fields [PDF]
Space Science Reviews, 2008 43 pages, 18 ...
de Wijn, A. +3 more
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Temporal Behaviors of Magnetic Helicity Injections by Self and Mutual Sunspot Rotations
The Astrophysical Journal, 2023 Magnetic helicity is a physical parameter used to quantify the complexity of magnetic fields, providing an indication of the energy state in the coronal magnetic structure.
Takahiro Hasegawa, Toshifumi Shimizu
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Bipolar solar magnetic fields [PDF]
Astronomy & Astrophysics, 2015 Aims. Understanding magnetic fields in the solar corona is closely related to the complex nature of the often nonlinear differential equations describing such structures. Based on the ansatz of force-free fields, a class of solutions is derived and discussed that allows for axisymmetric bipolar magnetic fields. Methods.
R. C. Tautz, I. Lerche
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On the Origin of the Photospheric Magnetic Field
The Astrophysical Journal, 2022 This article presents results that challenge the paradigms that (1) the convection zone is the source of the radial magnetic field in the photosphere and (2) that coronal currents are neutralized from the perspective of the photosphere.
Peter W. Schuck +3 more
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The evolution of a spot–spot-type solar active region which produced a major solar eruption
Frontiers in Astronomy and Space Sciences, 2023 Solar active regions are the main sources of large solar flares and coronal mass ejections. It is found that the active regions producing large eruptions usually show compact, highly sheared polarity inversion lines.
Lijuan Liu, Lijuan Liu, Lijuan Liu
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