Results 31 to 40 of about 1,966 (233)
ALFVÉN WAVES IN SIMULATIONS OF SOLAR PHOTOSPHERIC VORTICES [PDF]
The Astrophysical Journal, 2013 5 pages, 4 figures, accepted to ...
Shelyag, S. +3 more
openaire +3 more sources
Turbulence in the Solar Photosphere [PDF]
Space Science Reviews, 2001 16 pages, 1 ...
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Sulfur‐bearing serpentine in carbonaceous chondrites
Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2864-2890, December 2025.Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping +14 more
wiley +1 more source
High-resolution Observations of a C9.3 White-light Flare and Its Impact on the Solar Photosphere
The Astrophysical Journal LettersWe present a detailed analysis of a C9.3 white-light flare using high-resolution observations from the New Vacuum Solar Telescope. The flare occurred near the eastern solar limb on 2023 September 11, within NOAA AR 13431, and produced beam electrons with
Zhe Xu +6 more
doaj +1 more source
Solar and stellar photospheric abundances
Living Reviews in Solar Physics, 2016 The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations. Improving those foundations to refine the accuracy of the inferred abundances has proven challenging, but progress has been made.
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Exploring the Validation Results of the Advanced Solar Particle Events Casting System (ASPECS)
Space Weather, Volume 23, Issue 11, November 2025.Abstract Solar Energetic Particle (SEP) events can adversely affect space and ground‐based systems. Space weather effects associated with SEP events can impact communication and navigation systems, spacecraft electronics and operations, space power systems, crewed space missions, and commercial aircraft operations.
Athanasios Papaioannou +13 more
wiley +1 more source
The Astrophysical JournalFull-disk measurements of the solar magnetic field by the Helioseismic and Magnetic Imager (HMI) are often used for magnetic field extrapolations, but its limited spatial and spectral resolution can lead to significant errors.
C. Beck +5 more
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Space Weather, Volume 23, Issue 11, November 2025.Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera +14 more
wiley +1 more source
Photospheric Swirls in a Quiet-Sun Region
The Astrophysical JournalSwirl-shaped flow structures have been observed throughout the solar atmosphere, in both emission and absorption, at different altitudes and locations, and are believed to be associated with magnetic structures. However, the distribution patterns of such
Quan Xie +4 more
doaj +1 more source
Coronal heating and wind acceleration by nonlinear Alfvén waves – global simulations with gravity, radiation, and conduction [PDF]
Nonlinear Processes in Geophysics, 2008 We review our recent results of global one-dimensional (1-D) MHD simulations for the acceleration of solar and stellar winds. We impose transverse photospheric motions corresponding to the granulations, which generate outgoing Alfvén waves.
T. K. Suzuki
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