Results 31 to 40 of about 1,446 (180)
Solar wind from the coronal hole boundaries [PDF]
Journal of Geophysical Research: Space Physics, 2005 Recent studies using in situ observations established that the interface between fast and slow wind in interplanetary space has two distinct parts: a smoothly varying boundary layer flow that flanks fast wind from coronal holes and a sharper plasma discontinuity between intermediate and slow solar wind.
N. A. Schwadron +5 more
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Dataset of Quiet Space Weather Periods for Ionospheric Studies
Earth and Space Science, Volume 13, Issue 4, April 2026.Abstract The ionosphere is a dynamic environment regularly affected from above and from below. This study identifies periods within the years 2000–2023 when the impact from above, driven by space weather, was minimal. The quiet space weather periods have wide usage for two types of ionospheric studies. At first, studies of isolated space weather events
Šimon Mackovjak +12 more
wiley +1 more source
SOLAR WIND AND CORONAL BRIGHT POINTS INSIDE CORONAL HOLES
The Astrophysical Journal, 2011 Observations of 108 coronal holes (CHs) from 1998-2008 were used to investigate the correlation between fast solar wind (SW) and several parameters of CHs. Our main goal was to establish the association between coronal bright points (CBPs; as sites of magnetic reconnection) and fast SW. Using in situ measurements of the SW, we have connected streams of
Nina V. Karachik, Alexei A. Pevtsov
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.Abstract This study investigates global ionospheric variability using Global Total Electron Content (GTEC), defined as the spatial average of daily averaged Global Ionospheric Maps derived from the International GNSS Service. The analysis spans from 2010 to 2024, covering Solar Cycle 24 and the rising phase of Solar Cycle 25, and incorporates ...
Ramadane Hamed Linjouom Nsangou +1 more
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The Photospheric Footpoints of Solar Coronal Hole Jets [PDF]
The Astrophysical Journal, 2021 Abstract We study the photospheric footpoints of a set of 35 coronal jets in a coronal hole as observed by Hinode/EIS. We use SDO/AIA data to coalign the spectroscopic EIS data with SDO/HMI line-of-sight magnetograms and calculate the plane-of-sky flow field using local correlation tracking (LCT) on SDO/HMI white light images.
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Why Coronal Mass Ejections Arrive Differently: Solar Cycle Modulation Through Solar Wind Structure
Space Weather, Volume 24, Issue 4, April 2026.Abstract Coronal Mass Ejections (CMEs) are large structures of magnetized plasma ejected from the Sun's atmosphere into the heliosphere. The interaction of CMEs with the ambient solar wind during propagation affects arrival time and speed at Earth. Since the solar wind structure changes with the solar cycle, variability in the transit times and arrival
D. L. Gyeltshen +3 more
wiley +1 more source
MHD waves in the solar north polar coronal hole
Astronomische Nachrichten, 2010 AbstractThe effects, hitherto not treated, of the temperature and the number density gradients, both in the parallel and the perpendicular direction to the magnetic field, of O VI ions, on the MHD wave propagation characteristics in the solar North Polar Coronal Hole are investigated.
Devlen, E., Pekunlu, E. R.
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The Pointing Error Due To Laser Propagation in Space Plasma for TianQin Gravitational Wave Detection
Space Weather, Volume 24, Issue 4, April 2026.Abstract TianQin, a space‐borne gravitational wave observatory, is designed to detect gravitational‐wave signals via laser interferometry. As the inhomogeneous space plasma surrounds the inter‐satellite laser links, the propagation of the laser in space plasma can introduce pointing error noise.
Shenwei Zhou +4 more
wiley +1 more source
Post‐Processing Probabilistic Forecasts of the Solar Wind by Data Mining Similar Scenarios
Space Weather, Volume 24, Issue 4, April 2026.Abstract The solar wind speed at Earth is one of the most important parameters regarding the effects of space weather on society. Thus far, most approaches for predicting the solar wind speed produce a single‐value time series without uncertainty, or utilize ensemble methods which require custom calibration development.
Daniel E. da Silva +3 more
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Coronal holes and solar-terrestrial relationships
Geofísica Internacional, 1991 En este trabajo se discute el papel que juegan los hoyos coronales del Sol en las perturbaciones del viento solar y en las alteraciones del ambiente terrestre. Se presentan evidencias de la relación de estos hoyos con el flujo de rayos cósmicos galácticos en la Tierra, los comienzos repentinos de tormentas geomagnéticas y las auroras.
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