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Mapping solar magnetic fields from the photosphere to the base of the corona. [PDF]
Sci Adv, 2021 A novel space experiment achieves an unprecedented map of solar magnetic fields from the photosphere to the base of the corona. Routine ultraviolet imaging of the Sun’s upper atmosphere shows the spectacular manifestation of solar activity; yet, we ...
Ishikawa R +27 more
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Solar force-free magnetic fields [PDF]
Living Reviews in Solar Physics, 2021 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 such as plasma pressure gradients and gravity can be neglected in the lowest order.
T. Wiegelmann, T. Sakurai
semanticscholar +6 more sources
Magnetic fields in the solar convection zone [PDF]
Living Reviews in Solar Physics, 2021 It has been a prevailing picture that active regions on the solar surface originate from a strong toroidal magnetic field stored in the overshoot region at the base of the solar convection zone, generated by a deep seated solar dynamo mechanism.
Yuhong Fan
semanticscholar +7 more sources
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.
A. Hood, D. Hughes
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On Azimuthal Solar Magnetic Fields.
The Astrophysical Journal, 1956 V. C. A. Ferraro, P.C. Kendall
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Reconstructing solar magnetic fields from historical observations [PDF]
Astronomy & Astrophysics, 2019 Context. Systematic observations of magnetic field strength and polarity in sunspots began at Mount Wilson Observatory (MWO), USA in early 1917. Except for a few brief interruptions, this historical dataset has continued until the present. Aims.
A. Pevtsov +9 more
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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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The solar magnetic field [PDF]
Reports on Progress in Physics, 2006 The magnetic field of the Sun is the underlying cause of the many diverse phenomena combined under the heading of solar activity. Here we describe the magnetic field as it threads its way from the bottom of the convection zone, where it is built up by the solar dynamo, to the solar surface, where it manifests itself in the form of sunspots and faculae,
Bernd Inhester +2 more
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The magnetic field in the solar atmosphere [PDF]
The Astronomy and Astrophysics Review, 2014 This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere. It is also responsible for all solar activity in its numerous manifestations.
Thomas Wiegelmann +2 more
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Solar magnetic fields as revealed by Stokes polarimetry [PDF]
The Astronomy and Astrophysics Review, 2013 Observational astrophysics started when spectroscopy could be applied to astronomy. Similarly, observational work on stellar magnetic fields became possible with the application of spectro-polarimetry.
J. O. Stenflo
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