Results 61 to 70 of about 1,655 (241)
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract We investigate the nighttime equatorial ionosphere during the 19 January 2026 geomagnetic storm using Global‐scale Observations of the Limb and Disk OI 135.6 nm observations and ground‐based GPS Total Electron Content. The observations reveal a pronounced longitudinal asymmetry in the post‐sunset equatorial ionization anomaly (EIA).
Deepak K. Karan +6 more
wiley +1 more source
Geophysical Research Letters, 2019 We compare the relative importance of two competing mechanisms (Alfvén wing vs. magnetosheath force balance) in determining the saturation of the reverse convection potential under northward interplanetary magnetic field.
Victoria Wilder +4 more
doaj +1 more source
Physical and Mineralogical Properties of Anhydrous Interplanetary Dust Particles in the Analytical Electron Microscope [PDF]
International 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
Oxygen Ion Percentage Inferred From the Cutoff Frequencies of Ionospheric ELF Hiss Emissions
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract The lower cutoff frequency of hiss emissions observed in the ionosphere is controlled by local plasma composition and density. This study identifies 6,340 ionospheric hiss wave events based on observations from the China Seismo‐Electromagnetic Satellite (CSES‐01) from 1 August 2018 to 31 July 2020.
Bin He +8 more
wiley +1 more source
Betatron Cooling of Halo and Strahl Electrons in the Solar Wind
The Astrophysical Journal LettersIt is widely recognized that adiabatic acceleration plays an essential role in the dynamics of the solar wind electron distribution. Nevertheless, the role of electron adiabatic cooling remains poorly understood, at least from an observational standpoint.
Weiduo Meng +6 more
doaj +1 more source
To Mars through LEO: How commercial space travel will change exploration‐enabling research
Experimental Physiology, EarlyView.
Christopher Puhl, Michail Magkos
wiley +1 more source
Structured Energy Conversion in Kelvin‐Helmholtz Instability
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract We present quantitative investigations of the energy conversion pathways—electromagnetic ϵEM $\left({{\epsilon}}^{EM}\right)$, fluid flow ϵf $\left({{\epsilon}}^{f}\right)$, and particle thermal ϵth $\left({{\epsilon}}^{th}\right)$ energies—within the Kelvin‐Helmholtz instability (KHI) observed by the Magnetospheric Multiscale mission. We find
Kyunghwan Dokgo +4 more
wiley +1 more source
Beyond the horizon: Why space biology is the next great innovation opportunity
Experimental Physiology, EarlyView.
Carina Kern, Keith Siew
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Saturn's ring current, which modulates the global magnetic field configuration, varies dynamically with hot plasma injections. However, quantifying transient magnetic field disturbances remains challenging in the absence of in situ measurements on Saturn's surface.
Yimeng Li +7 more
wiley +1 more source
Empirical Assessment of Storm‐Time Thermospheric Density Inversion Methods From LEO POD Data
Earth and Space Science, Volume 13, Issue 8, August 2026.Abstract Thermospheric mass density is one of the largest sources of operational uncertainty for spacecraft in low Earth orbit, particularly during geomagnetic storms. The growing population of Global Navigation Satellite System‐equipped satellites presents a data set of opportunity: precise orbit determination (POD) data streams can be used to ...
Charles Constant +4 more
wiley +1 more source