Results 121 to 130 of about 932,549 (275)

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin   +8 more
wiley   +1 more source

The Heliocentric Distance Where the Deflections and Rotations of Solar Coronal Mass Ejections Occur

open access: yes, 2015
Understanding the trajectory of a coronal mass ejection (CME), including any deflection from a radial path, and the orientation of its magnetic field is essential for space weather predictions. Kay et al.
Kay, C., Opher, M.
core   +1 more source

A Neural Network Model of Equatorial Electric Field Structures in the Inner Magnetosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Enabled by state‐of‐the‐art electric field measurements from the Van Allen Probes and careful calibration of the high‐quality data, we developed the first machine‐learning based inner‐magnetosphere electric field model, which covers L = 2.5–6.0 within 20° ${}^{\circ}$ around the magnetic equator.
M. Hua   +6 more
wiley   +1 more source

Physical and Mineralogical Properties of Anhydrous Interplanetary Dust Particles in the Analytical Electron Microscope [PDF]

open access: yesInternational Astronomical Union Colloquium, 1991
Abstract The fine grained mineralogy and petrography of anhydrous “pyroxene” and “olivine” classes of chondritic interplanetary dust have been investigated by numerous electron microscopic studies. The “pyroxene” interplanetary dust particles (IDPs) are porous, unequilibrated assemblages of mineral grains, metal, glass, and carbonaceous material ...
openaire   +1 more source

Smart and Flexible Optical Solar Reflectors for Passive Radiative Cooling Regulation in Space Using a W:VO2 Metasurface

open access: yesNanophotonics, Volume 15, Issue 3, 12 February 2026.
Passive regulation of thermal management in space relies on engineered radiative coatings that can vary their emissivity with temperature. Here a smart and flexible solution is presented combining a W:VO2 metasurface with a low‐emissivity solar reflector. This highly durable first‐surface coating survives space qualification tests and offers attractive
Mirko Simeoni   +13 more
wiley   +1 more source

The Radial Variation of Suprathermal Particles in Stream Interaction Regions: Comparisons between Solar Orbiter, ACE, and STEREO-A

open access: yesThe Astrophysical Journal
With the launch of Solar Orbiter, the intensity and composition of suprathermal particles have been sampled within the inner heliosphere at distances between ∼0.3 and 1 au.
Robert C. Allen   +10 more
doaj   +1 more source

Occurrence rate of extreme magnetic storms

open access: yes, 2012
Statistical analysis of occurrence rate of magnetic storms induced by different types of interplanetary drivers is made on the basis of OMNI data for period 1976-2000.
Lodkina, I. G.   +3 more
core   +1 more source

Evaluation of COSMIC‐2 Satellite Data for foF2 and hmF2 Against Ground‐Based Ionosondes and the PyIRI (2020) Model Across Middle to Low Latitudes

open access: yesSpace Weather, Volume 24, Issue 2, February 2026.
Abstract This study presents a comprehensive evaluation of COSMIC‐2 satellite‐derived ionospheric peak parameters (foF2 and hmF2) against ground‐based ionosonde observations and a comparative analysis with PyIRI (2020) model estimates across middle to low latitudes for the period 2020–2024.
Ephrem Beshir Seba   +3 more
wiley   +1 more source

Updating the Electrostatic Model for Dust Impact Detection with Antenna Instruments

open access: yesThe Astrophysical Journal
Antenna instruments deployed in space are known to be sensitive to dust impacts, and the detected signals can be used to characterize the dust populations within the solar system.
Austin Matheus Smith   +4 more
doaj   +1 more source

Coronal Mass Ejections - Propagation Time and Associated Internal Energy

open access: yes, 2010
In this paper, we analyze 91 coronal mass ejection (CME) events studied by Manoharan et al. (2004) and Gopalswamy and Xie (2008). These earth-directed CMEs are large (width $>$160$^\circ$) and cover a wide range of speeds ($\sim$120--2400 {\kmps}) in the
A. Mujiber Rahman   +25 more
core   +1 more source

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