Results 111 to 120 of about 3,908 (245)

Unraveling the Fine‐Scale Tapestry of Solar Wind at 1AU

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Solar wind is a complex network of distinct magnetic flux tubes, each contained and separated by a current sheet. In this study, more than 50,000 current sheets in the solar wind are identified and characterized for the first time, using multi‐point Cluster observations during solar minimum and maximum intervals.
M. Akhavan‐Tafti, S. Kumar, A. Szabo, B. Grison   +3 more
wiley   +1 more source

The Relative Importance of Geoeffective Length Versus Alfvén Wing Formation in the Saturation of the Ionospheric Reverse Convection Potential

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, R. E. Lopez, S. Eriksson, K. Pham, D. Lin   +4 more
doaj   +1 more source

Electromagnetic Ion Cyclotron Waves in the Initial Phase of Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Using simultaneous magnetic field observations from 10 satellites and an automated detection algorithm, we identify broad regions of electromagnetic ion cyclotron (EMIC) wave activity during the initial phases of geomagnetic storms between September 2015 and October 2019.
Taylor R. Whitney Aegerter, Lauren W. Blum   +1 more
wiley   +1 more source

Betatron Cooling of Halo and Strahl Electrons in the Solar Wind

The Astrophysical Journal Letters
It 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, Jianpeng Guo, Yan Chen, Zelin Wang, Huishan Fu, Yi Wang, Yong Wei   +6 more
doaj   +1 more source

Is the Magnetic Field Line Curvature Really Important for Energetic Electron Losses From the Radiation Belt?

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Recently, Hua et al. (2026, https://doi.org/10.1029/2025GL120881) combined observations during a 4‐day storm period with numerical simulations and concluded that the abrupt electron loss in the field‐line‐curvature scattering (FLCS) region played a leading role in shaping the outer boundary of radiation belt (RB); the authors conjectured that ...
V. A. Sergeev, N. A. Tsyganenko
wiley   +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

MMS Observations of the Energetic Particles Within Kelvin‐Helmholtz Waves at the Boundary of the 10 May 2024 Coronal Mass Ejection (CME)

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract On 10 May 2024, Earth was hit by a CME that drove the largest geomagnetic storm in 20 years. Multi‐spacecraft observations previously showed that the ∼100 nT north‐south IMF bz ${b}_{z}$ variation was driven by Kelvin‐Helmholtz waves with wavelength ∼250 RE ${R}_{E}$ and reconnection jets in the ±z $\pm z$‐direction (Nykyri, 2024a, https://doi.
Katariina Nykyri, Neetasha Arya, Scott Boardsen, Guan Le, Harri Laakso, Lynn Wilson, Xuanye Ma, Katherine Holland, Brandon Burkholder, Leon Ofman, Kyoung‐Joo Hwang, Dinesh Radhakrishnan, Shiva Kavosi, Daniel Gershman, Christine Gabrielse, Barbara Giles, Stephen Fuselier, Jim Burch   +17 more
wiley   +1 more source

Tracing solar wind plasma entry into the magnetosphere using ion-to-electron temperature ratio [PDF]

, 2009
When the solar wind Mach number is low, typically such as in magnetic clouds, the physics of the bow shock leads to a downstream ion-to-electron temperature ratio that can be notably lower than usual.
Rouillard AP, Genot, V., Schwartz, SJ, Bogdanova, Y.V., Borovsky JE, Pu ZY, Sibeck, DG, Sibeck DG, Constantinescu, D., Shen C, Eastwood, JP, Génot, Vincent, Sibeck, D.G., Panov, E, Birn, J, Schwartz, S.J., Fazakerley, A. N., Jacquey, C., Shen, C., Escoubet, CP, Lavraud, B., Dunlop, M. W., Shen, Chao, Frey H, Rouillard, A.P., Volwerk, M., Schwartz SJ, Rouillard, A. P., Berchem, J., Wild JA, Eastwood JP, Bogdanova Y, Génot V, Constantinescu D, Hasegawa, H, Rouillard, AP, Lavraud B, Taylor, M. G. G. T., Dandouras, I, Sibeck, D. G., Berchem J, Dunlop, MW, Taylor MGGT, Panov, E., Jacquey, C, Wild, JA, Constantinescu, D, Hasegawa, H., Schwartz, S. J., Dunlop, M.W., Pu, Z. Y., Wild, James A., Shi, J, Bogdanova, Y, Pu, ZY, Birn J, Taylor, MGGT, Hasegawa H, Frey, H., Shi, J., Dandouras, I., Birn, J., Lavraud, B, Fazakerley, AN, Bogdanova, Y., Fazakerley, A.N., Genot, V, Escoubet CP, Dunlop MW, Borovsky, JE, Wild, J. A., Dandouras I, Berchem, J, Shen, C, Escoubet, C.P., Jacquey C, Taylor, M.G.G.T., Volwerk M, Volwerk, M, Borovsky, J.E., Panov E, Eastwood, J.P., Frey, H, Pu, Z.Y., Eastwood, J. P., Escoubet, C. P., Shi J, Borovsky, J. E., Fazakerley AN   +88 more
core   +1 more source

Quantifying the Effects of Parameters in Widespread Solar Energetic Particle Events with EPREM

The Astrophysical Journal
The Energetic Particle Radiation Environment Model (EPREM) solves the focused transport equation on a Lagrangian grid in a frame comoving with the solar wind plasma and simulates the acceleration and transport of solar energetic particles (SEPs) in the ...
Matthew A. Young, Bala Poduval
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