Journal ArticleDOI
Solar magnetic fields
TLDR
The PRL anniversary gives us an opportunity to look back at past milestones and try to identify the main unsolved issues that will be addressed in the future as discussed by the authors, which is a good idea.Abstract:
Since the structuring and variability of the Sun and other stars are governed by magnetic fields, much of present-day stellar physics centers around the measurement and understanding of the magnetic fields and their interactions. The Sun, being a prototypical star, plays a unique role in astrophysics, since its proximity allows the fundamental processes to be explored in detail. The PRL anniversary gives us an opportunity to look back at past milestones and try to identify the main unsolved issues that will be addressed in the future.read more
Citations
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Journal ArticleDOI
Solar activity and the corona
TL;DR: In this article, the authors put together what we have learned about coronal structures and phenomenology to synthesize a physical picture of the corona as a voluminous, thermally and electrically highlyconducting atmosphere responding dynamically to the injection of magnetic flux from below.
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THE FORMATION OF IRIS DIAGNOSTICS. II. THE FORMATION OF THE Mg II h&k LINES IN THE SOLAR ATMOSPHERE
Jorrit Leenaarts,Tiago M. D. Pereira,Tiago M. D. Pereira,Mats Carlsson,Han Uitenbroek,B. De Pontieu +5 more
TL;DR: In this article, the authors compute the vertically emergent h and k intensity from a snapshot of a dynamic 3D radiation-magnetohydrodynamic (RMHD) model of the solar atmosphere, and investigate which diagnostic information about the atmosphere is contained in the synthetic line profiles.
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A Critical Review of Galactic Dynamos
TL;DR: In this paper, the authors present a general picture of how galactic magnetic fields grow in disks according to the alpha-Omega dynamo theory, and discuss the possible seed fields from which the dynamo starts and their relation to the primordial hypothesis.
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Three-dimensional magnetic field topology in a region of solar coronal heating.
TL;DR: The observations reveal two magnetic features that characterize young active regions on the Sun: a set of rising magnetic loops and a tangential discontinuity of the magnetic field direction, the latter being the observational signature of an electric current sheet, providing strong support for coronal heating models based on the dissipation of magnetic energy at current sheets.
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Simulations of the Photospheric Magnetic Activity and Outer Atmospheric Radiative Losses of Cool Stars Based on Characteristics of the Solar Magnetic Field
TL;DR: In this article, the authors presented a comprehensive simulation of the dynamic photospheric magnetic field of the Sun down to the scale of the mixed polarity network, thus incorporating all flux involved in outer atmospheric heating.
References
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Journal ArticleDOI
Existence of Electromagnetic-Hydrodynamic Waves
TL;DR: In this article, a conducting liquid is placed in a constant magnetic field and every motion of the liquid gives rise to an E. H. M. F. which produces electric currents.
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Über magnetische Beeinflussung der Polarisation der Resonanzfluoreszenz
TL;DR: In this article, the magnetische beeinflussung der Resonanzfluoreszenz and ihre deutung als Zeemaneffekt is discussed. But the focus is on the magnetischen Felder.
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Magnetic-field structure of the photospheric network
TL;DR: In this paper, a method is developed to determine the physical parameters of the spatially unresolved photospheric network, where magnetic fluxes are recorded simultaneously in the two FeI lines 5250 and 5247 A, which belong to the same multiplet and have practically the same oscillator strength and excitation potential of the lower level but differ in the effective Lande factor.
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Hydraulic concentration of magnetic fields in the solar photosphere. VI. Adiabatic cooling and concentration in downdrafts.
TL;DR: In this article, it was pointed out that the convective heat transport in the magnetic field swept into the downdrafts in the junctions of supergranule boundaries is strongly suppressed by magnetic field.