Results 1 to 10 of about 1,966 (233)
The role and contribution of magnetic fields, characterized via their magnetic flux, to the statistical structuring of the solar atmosphere [PDF]
Scientific Reports, 2022 The anomalous heating of the solar upper atmosphere is one of the eight key problems in modern astronomy. Moreover, the stratification of the solar atmosphere is an outstanding key-problem in solar physics.
K. J. Li, J. C. Xu, W. Feng
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Photospheric magnetic vortex structures [PDF]
Annales Geophysicae, 2011 Using direct numerical magneto-hydrodynamic (MHD) simulations, we demonstrate the evidence of two physically different types of vortex motions in the solar photosphere.
S. Shelyag +4 more
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On the Origin of the Photospheric Magnetic Field
The Astrophysical Journal, 2022 This article presents results that challenge the paradigms that (1) the convection zone is the source of the radial magnetic field in the photosphere and (2) that coronal currents are neutralized from the perspective of the photosphere.
Peter W. Schuck +3 more
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Journal of Space Weather and Space Climate, 2022 Studies of the Sun and the Earth’s atmosphere and climate consider solar variability as an important driver, and its constant monitoring is essential for climate models. Solar total and spectral irradiance are among the main relevant parameters. Physical
Muralikrishna Amita +2 more
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Equation of state for solar near-surface convection [PDF]
Annales Geophysicae, 2015 Numerical 3-D radiative hydrodynamical simulations are the main tool for the analysis of the interface between the solar convection zone and the photosphere. The equation of state is one of the necessary ingredients of these simulations.
N. Vitas +4 more
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Solar photospheric magnetic reconnection [PDF]
Earth, Planets and Space, 2014 We investigate photospheric magnetic reconnection due to an encounter of oppositely directed vertical magnetic flux sheets, performing 2.5-dimensional magnetohydrodynamic (MHD) numerical simulations. We construct the initial flux sheets adopting the thin flux tube approximation.
Takeuchi, Akitsugu, Shibata, Kazunari
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Solar photosphere magnetization [PDF]
Astronomy & Astrophysics, 2020 Context.A recent review shows that observations performed with different telescopes, spectral lines, and interpretation methods all agree about a vertical magnetic field gradient in solar active regions on the order of 3 G km−1, when a horizontal magnetic field gradient of only 0.3 G km−1is found.
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Signatures of Magnetic Flux Ropes in the Low Solar Atmosphere Observed in High Resolution
Frontiers in Astronomy and Space Sciences, 2019 Magnetic flux ropes (MFRs) are important physical features closely related to solar eruptive activities with potential space weather consequences. Studying MFRs in the low solar atmosphere can shed light on their origin and subsequent magnetic structural
Haimin Wang +3 more
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The Astrophysical Journal, 2023 The shear flow influences the stability of magnetohydrodynamic (MHD) waves. In the presence of a dissipation mechanism, flow shear may induce an MHD wave instability below the threshold of the Kelvin–Helmholtz instability, which is called dissipative ...
D. J. Yu
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Annales Geophysicae, 1999 Two 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 ...
M. Schüssler, M. Schüssler
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