Results 81 to 90 of about 3,875 (223)
The Relationship between Kinetic and Magnetic Helicity in Solar Active Regions
The Astrophysical JournalUsing Helioseismic and Magnetic Imager/Solar Dynamics Observatory data, we search for a relationship between kinetic helicity and magnetic helicity in solar active regions (ARs) using a sample of 62 ARs from 2010 May to 2015 May.
Yang Liu +5 more
doaj +1 more source
Magnetohydrodynamic code for gravitationally-stratified media [PDF]
, 2008 Aims. We describe a newly-developed magnetohydrodynamic (MHD) code with the capacity to simulate the interaction of any arbitrary perturbation (i.e., not necessarily limited to the linearised limit) with a magnetohydrostatic equilibrium background ...
Shelyag, S. +15 more
core +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Martian carbonate‐bearing rocks are compelling targets for exploration because they preserve detailed records of past aqueous processes, climate, and habitability. The Margin unit in Jezero crater is a distinct olivine‐ and carbonate‐bearing unit stratigraphically underlying the western fan, lining the inner margin of the western crater rim ...
Alexander J. Jones +29 more
wiley +1 more source
Jupiter's X‐ray Aurorae. A High Signal Spectral Analysis of the 0.24–1.40 keV Energy Range
Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.Abstract Jupiter's X‐ray auroras are predominantly produced by precipitating energetic heavy ions. Recent results suggest a connection between the pulsation rate of these ion aurorae and the pulsation rate of magnetospheric waves. Using remote X‐ray observations and results from in situ measurements from the Juno Jupiter Energetic particle Detector ...
B. Parry +6 more
wiley +1 more source
Development and application of a global magnetic field evolution model for the solar corona
, 2009 Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
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Rotational radial shear in the low solar photosphere
, 2023 Context. Radial differential rotation is an important physical ingredient in stellar dynamo theory. In the case of the Sun, heliosismology techniques have revealed the existence of a near-surface shear layer covering 15–20% of the upper convection zone ...
Faurobert, M. +9 more
core +1 more source
2-D multiline spectroscopy of the solar photosphere
, 2002 The structure and dynamics of the photosphere are investigated, with time series of broadband and monochromatic images of quiet granulation, at the solar disk center. Images were acquired with the IPM observing mode at the THEMIS telescope.
F. Berrilli +5 more
core +2 more sources
The Astrophysical JournalThe ubiquitous 5 minute solar p -mode oscillations, excited at the photosphere, play a crucial role in driving various coronal instabilities and mediating upward energy transport. These modes are strongly influenced by nonthermal electron populations. To
Souvik Das, Pralay Kumar Karmakar
doaj +1 more source
Exploring Solar Granulation: from IMaX/SUNRISE to DKIST
Proceedings of the International Florida Artificial Intelligence Research Society ConferenceGranules are small cellular structures that populate the solar photosphere and are formed by the dynamic behavior of convection cells. This constant motion generates an evolving pattern of diverse granule types and intergranular regions across the ...
Reza Mansouri +2 more
doaj +1 more source
Solar flux emergence : a three-dimensional numerical study
, 2008 Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
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