Results 81 to 90 of about 31,707 (176)
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
Coronal Mass Ejections - Propagation Time and Associated Internal Energy
, 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
Mirror Mode Mediated EMIC Wave Generation in the Magnetosheath
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Electromagnetic ion cyclotron (EMIC) waves and mirror modes (MMs), both driven by ion temperature anisotropy, are commonly observed in planetary magnetosheaths. Conventional explanations for their co‐occurrence are largely based on linear instability theory in proton–electron plasmas, which requires comparable growth rates for the EMIC and MM ...
Yifan Wu +5 more
wiley +1 more source
The Heliocentric Distance Where the Deflections and Rotations of Solar Coronal Mass Ejections Occur
, 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
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract We analyze the response of mean winds and semidiurnal tides (SDTs) in the mesosphere and lower thermosphere (MLT; ∼70–110 km altitude) to the May 2024 geomagnetic super storm, based on meteor radar (MR) observations from King Sejong Station (KSS; geographic: 62.22°S, 58.78°W; geomagnetic: 53.27°S, 10.88°E) in the Antarctic Peninsula.
Byeong‐Gwon Song +8 more
wiley +1 more source
Interstellar Dust in the Solar System: Model versus In-Situ Spacecraft Data
, 2019 In the early 1990s, contemporary interstellar dust penetrating deep into the heliosphere was identified with the in-situ dust detector on board the Ulysses spacecraft.
Altobelli, Nicolas +5 more
core +1 more source
Evolution of Open Magnetic Flux During Substorms: The Effects of Dipole Tilt Angle
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract There is a long‐standing debate on the causes of the semiannual variation of geomagnetic activity. One of the prevailing hypotheses is that the Earth's dipole tilt angle Ψ ${\Psi }$ modulates the dayside reconnection rate, causing the so‐called equinoctial effect. Here we perform the first large‐scale statistical study to test this hypothesis.
A. Nair +3 more
wiley +1 more source
The Astrophysical JournalWith 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
Heliospheric Evolution of Magnetic Clouds
, 2019 Interplanetary evolution of eleven magnetic clouds (MCs) recorded by at least two radially aligned spacecraft is studied. The in situ magnetic field measurements are fitted to a cylindrically symmetric Gold-Hoyle force-free uniform-twist flux-rope ...
Amerstorfer, Tanja +9 more
core +1 more source
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Extreme conditions during storms profoundly alter the evolution of equatorial plasma bubbles (EPBs), yet the key dynamics remains poorly understood. We document the rapid expansion, contraction, and decay of super EPBs in South America during the 12 November 2025 storm with Interplanetary Magnetic Field (IMF) Bz/By magnitude exceeding ∼50 nT ...
Shasha Zou +6 more
wiley +1 more source