Results 21 to 30 of about 9,046 (214)
The Astrophysical Journal, 2023 In solving the solar coronal heating problem, it is crucial to comprehend the mechanisms by which energy is conveyed from the photosphere to the corona. Recently, magnetic tornadoes, characterized as coherent, rotating magnetic-field structures extending
Hidetaka Kuniyoshi +3 more
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Photospheric magnetoconvection [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractMagnetic fields, convective motions and radiative energy transport all strongly influence each other in the solar photosphere. Attempts to understand, at a quantitative level, the diverse phenomona seen in the photosphere have relied on increasingly powerful computers since the 1980's.
Cameron, R., Schüssler, M., Vögler, A.
openaire +2 more sources
Probing oscillations in the lower solar atmosphere with the FRANCIS integral field unit
Frontiers in Astronomy and Space SciencesThe photosphere is dominated by 3 mHz oscillations, and as we move upward through the solar atmosphere, the dominant frequency is progressively filtered up to 5 mHz, which is commonly observed ubiquitously in the chromosphere. However, the interaction of
S. D. T. Grant +9 more
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Type‐III Solar Radio Bursts at Mars: A 16.5‐Year Catalog From Mars Express‐MARSIS at 0.1–5.5 MHz
Space Weather, Volume 24, Issue 10, October 2026.Abstract The most intense radio feature in the Solar System are the solar Type‐III radio bursts, which are associated with electron beams that propagate along open magnetic field lines. Although solar radio bursts have been studied since the 1940s, observations remain mainly restricted within 1 AU.
Beatriz Sánchez‐Cano +22 more
wiley +1 more source
Adapted Empirical Modeling of Near‐Sun Solar‐Wind Speeds for Use in Ensemble Forecasts
Space Weather, Volume 24, Issue 9, September 2026.Abstract Solar wind science and forecasting relies on empirical relations between modeled coronal magnetic‐field structure—particularly flux‐tube expansion and distance to coronal hole boundary—and solar‐wind speed. There is lots of uncertainty in these relations, creating large uncertainties in the inner‐boundary conditions to heliospheric models ...
N. O. Edward‐Inatimi +7 more
wiley +1 more source
The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory
Astronomische Nachrichten, Volume 347, Issue 7, August 2026.ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth +20 more
wiley +1 more source
Forecasting Continuum Intensity for Solar Active Region Emergence Prediction Using Transformers
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract Early and accurate prediction of solar active region (AR) emergence is crucial for space weather forecasting. Building on established Long Short‐Term Memory (LSTM) based approaches for forecasting the continuum intensity decrease associated with AR emergence, this work expands the modeling with new architectures and targets.
Jonas Tirona +7 more
wiley +1 more source
Long-Term Variations in Background Bias and Magnetic Field Noise in HSOS/SMFT Observations
UniverseThe Solar Magnetic Field Telescope (SMFT) at Huairou Solar Observing Station (HSOS) has conducted continuous observations of solar vector magnetic fields for nearly four decades, and while the primary optical system remains unchanged, critical components—
Haiqing Xu +7 more
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DIFFERENT MODES OF TURBULENCE IN THE ACTIVE REGIONS OF THE SOLAR PHOTOSPHERE
Odessa Astronomical Publications, 2013 In work the range of different methods for the analysis of characteristics of turbulent processes in the active regions of the solar photosphere has been used.
L. V. Kozak +2 more
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