Results 101 to 110 of about 28,168 (221)
Observational Evidence of Shallow Origins for the Magnetic Fields of Solar Cycles
Frontiers in Astronomy and Space Sciences, 2018 Observational evidence for the origin of active region magnetic fields has been sought from published information on extended solar cycles, statistical distributions of active regions and ephemeral regions, helioseismology results, positional ...
Sara F. Martin
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Twisted flux tube emergence from the convection zone to the corona
, 2007 3D numerical simulations of a horizontal magnetic flux tube emergence with different twist are carried out in a computational domain spanning the upper layers of the convection zone to the lower corona.
Carlsson M. +9 more
core +1 more source
Annales GeophysicaeTwo aspects of solar MHD are discussed in relation to the work of the MHD simulation group at KIS. Photospheric magneto-convection, the nonlinear interaction of magnetic field and convection in a strongly stratified, radiating fluid, is a key process of ...
M. Schüssler
doaj
Single-dish high sensitivity determination of solar limb emission at 22 and 44 GHz [PDF]
A large number of solar maps were obtained with the use of Itapetinga 45 ft antenna at 22 GHz and 44 GHz. A statistical study of these maps, reduced using original techniques, permitted the establishment of the solar radius with great accuracy at the two
Costa, J. E. R. +2 more
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Horizontal magnetic fields in the solar photosphere
Astronomy Reports, 2009 15 pages, 7 figures, published by Astronomicheskii Zhurnal (in Russian) and Astronomy Reports (in English)
openaire +2 more sources
Case Studies on Pre-eruptive X-class Flares using R-value in the Lower Solar Atmosphere
The Astrophysical JournalThe R -value is a measure of the strength of photospheric magnetic polarity inversion lines in active regions (ARs). This work investigates the possibility of a relation between R -value variations and the occurrence of X-class flares in ARs, not in the ...
Shreeyesh Biswal +5 more
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Realistic Simulation of Local Solar Supergranulation
, 2008 I represent results three-dimensional numerical simulation of solar surface convection on scales local supergranulation with realistic model physics. I study thermal structure of convective motions in photosphere, the range of convection cell sizes and ...
Cristiana Dumitrache +3 more
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Convection-driven Multiscale Magnetic Fields Determine the Observed Solar Disk Gamma Rays
The Astrophysical JournalThe solar disk is a continuous source of GeV–TeV gamma rays. The emission is thought to originate from hadronic Galactic cosmic rays (GCRs) interacting with the gas in the photosphere and uppermost convection zone after being reflected by solar magnetic ...
Jung-Tsung Li +3 more
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On the origin of the magnetic energy in the quiet solar chromosphere
, 2019 The presence of magnetic field is crucial in the transport of energy through the solar atmosphere. Recent ground-based and space-borne observations of the quiet Sun have revealed that magnetic field accumulates at photospheric heights, via a local dynamo
Carlsson, Mats +5 more
core +1 more source
The Plasma β in Quiet Sun Regions: Multi-instrument View
The Astrophysical JournalA joint campaign of several spaceborne and ground-based observatories, such as the GREGOR solar telescope, the Extreme-ultraviolet Imaging Spectrometer (EIS), and the Interface Region Imaging Spectrograph (Hinode Observing Plan 381, 2019 October 11–22 ...
Jenny M. Rodríguez-Gómez +6 more
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