Results 1 to 10 of about 25,981 (95)
The Sun's General Magnetic Field [PDF]
Tellus, 1956 The solar magnetic field, including the interplanetary field is discussed. It is pointed out that in the absence of a theory of the Zeeman-effect in a turbulent atmosphere it is at present impossible to derive a value of the sun’s general magnetic field from spectroscopic measurements.
H. ALFVÉN, B. LEHNERT
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The Magnetic Field Inside the Sun [PDF]
Symposium - International Astronomical Union, 1988 Duvall, Harvey and Pomerantz (1986) reported the existence of a ‘structural asymmetry’ inside the Sun. We show that this asymmetry is not a consequence of the Sun's rotation. We attribute the asymmetry, rather, to a toroidal magnetic field inside the Sun.
W. Dziembowski, Philip R. Goode
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The Sun's global magnetic field [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 Our present-day understanding of solar and stellar magnetic fields is discussed from both an observational and theoretical viewpoint. To begin with, observations of the Sun's large-scale magnetic field are described, along with recent advances in measuring the spatial distribution of magnetic fields on other stars.
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The toroidal magnetic field inside the Sun [PDF]
International Astronomical Union Colloquium, 1991 Analysis of the fine structure of the solar oscillations has enabled us to determine the internal rotation of the Sun and to estimate the magnitude of the large-scale magnetic field inside the Sun. According to the data of Duvall et al. (1984), the core of the Sun rotates about twice as fast as the solar surface. Recently Dziembowski et al. (1989) have
V.N. Krivodubskij +3 more
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Hidden magnetic fields of young suns [PDF]
Astronomy and Astrophysics, 2020 Global magnetic fields of active solar-like stars are, nowadays, routinely detected with spectropolarimetric measurements and are mapped with Zeeman Doppler imaging (ZDI). However, due to the cancellation of opposite field polarities, polarimetry only captures a tiny fraction of the magnetic flux and cannot assess the overall stellar surface magnetic ...
Kochukhov, O. +4 more
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Quiet-Sun Magnetic Fields at High Spatial Resolution
The Astrophysical Journal, 2002 We present spectro-polarimetric observations of Inter-Network magnetic fields at the solar disk center. A Fabry-Perot spectrometer was used to scan the two Fe I lines at 6301.5 A and 6302.5 A. High spatial resolution (0.5") magnetograms were obtained after speckle reconstruction.
Cerdena, I. D. +2 more
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Turbulent magnetic fields in the Sun [PDF]
Astronomy and Geophysics, 2001 Nigel Weiss recounts his Presidential Address 2001, given to the RAS A&G Ordinary Meeting on 9 February 2001. Recent high-resolution observations, from the ground and from space, have revealed the fine structure of magnetic features at the surface of the Sun.
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THE SUN'S MERIDIONAL CIRCULATION AND INTERIOR MAGNETIC FIELD [PDF]
The Astrophysical Journal, 2011 To date, no self-consistent numerical simulation of the solar interior has succeeded in reproducing the observed thinness of the solar tachocline, and the persistence of uniform rotation beneath it. Although it is known that the uniform rotation can be explained by the presence of a global-scale confined magnetic field, numerical simulations have thus ...
McCaslin, Jeremy +2 more
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Correlations Between Brightness Fields and Magnetic Fields on the Sun [PDF]
Symposium - International Astronomical Union, 1968 In places on the solar surface where longitudinal magnetic fields are detectable using Leighton's photographic technique, spectroheliograms taken in the cores of many Fraunhofer lines show a bright photospheric network similar to, but with finer structure than, the familiar chromospheric network visible on Ca+ K232 spectroheliograms.
G. A. Chapman, N. R. Sheeley
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Magnetic fields of Sun-like stars [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractMagnetic fields play an important role at all stages of stellar evolution. In Sun-like stars, they are generated in the outer convective layers. Studying the large-scale magnetic fields of these stars enlightens our understanding of the field properties and gives us observational constraints for the field generation models.
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