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Generation of Solar Magnetic Fields I
1983In this lecture we continue our discussion concerning the generation of magnetic fields from the motion of conducting fluids. We proposed the “short sudden” idealization, which led to equation (17) in the preceding lecture. Vj in that equation is the large scale, steady fluid velocity that continually shears the field.
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Solar Magnetic Fields and Velocities
Publications of the Astronomical Society of Australia, 1970It has long been known that Fraunhofer lines show variations in intensity from place to place over the Sun’s surface, these being particularly noticeable in spectroheliograms obtained in the strong chromospheric lines. An early account of the weaker Unes was given by d’Azam-buja. McMath, Mohler, Pierce and Goldberg attributed intensity increases in (or
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Geomagnetism and Aeronomy, 2013
The solar polar magnetic field has attracted the attention of researchers since the polar magnetic field reversal was revealed in the middle of the last century (Babcock and Livingston, 1958). The polar magnetic field has regularly reversed because the magnetic flux is transported from the sunspot formation zone owing to differential rotation ...
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The solar polar magnetic field has attracted the attention of researchers since the polar magnetic field reversal was revealed in the middle of the last century (Babcock and Livingston, 1958). The polar magnetic field has regularly reversed because the magnetic flux is transported from the sunspot formation zone owing to differential rotation ...
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Magnetic Fields and Solar Activities
Astrophysics and Space Science, 2006We discuss the study of solar magnetic fields based on the photospheric vector magnetograms of solar active regions which were obtained at Huairou Solar Observing Station near Beijing in the period of 22nd and 23th solar cycles. The measurements of the chromospheric magnetic field and the spatial configuration of the field at the lower solar atmosphere
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Measurement of solar magnetic fields
Annual Meeting Optical Society of America, 1988We review the use of polarimetric techniques in measurements of the magnetic field in the sun’s atmosphere. The basic principles of the inverse Zeeman effect and the radiative transfer of polarized light are presented to demonstrate how the vector magnetic field on the sun can be determined in magnitude and direction from measurements of the Stokes ...
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Studies of solar magnetic fields
Solar Physics, 1977An estimate of the average magnetic field strength at the poles of the Sun from Mount Wilson measurements is made by comparing low latitude magnetic measurements in the same regions made near the center of the disk and near the limb. There is still some uncertainty because the orientation angle of the field lines in the meridional plane is unknown, but
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1977
Abstract : This report describes a series of observations of solar magnetic fields. These observations were made using narrow band filters and active seeing correction systems developed at the Lockheed Palo Alto Research Laboratories. New data has been obtained concerning the strength and size of solar magnetic field elements, and which set an upper ...
Alan M. Title, Robert C. Smithson
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Abstract : This report describes a series of observations of solar magnetic fields. These observations were made using narrow band filters and active seeing correction systems developed at the Lockheed Palo Alto Research Laboratories. New data has been obtained concerning the strength and size of solar magnetic field elements, and which set an upper ...
Alan M. Title, Robert C. Smithson
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Solar Force-Free Magnetic Fields
Living Reviews in Solar Physics, 2021Thomas Wiegelmann, Takashi Sakurai
exaly