Results 51 to 60 of about 1,308 (218)

On the Generation of Pre‐Sunrise Equatorial Plasma Bubbles in Southeast Asia During the Geomagnetic Storm of May 2024

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract A set of fresh Equatorial Plasma Bubbles (EPBs) formed during pre‐sunrise hours in the Southeast Asian sector amid the recovery phase of May 2024 geomagnetic storm. They offered new insights into their formation mechanism. This study used Total Electron Content (TEC) and Rate of TEC Index maps over Indonesia, along with ionosondes in Thailand ...
Sri Ekawati, Prayitno Abadi, Takuya Sori, Rezy Pradipta, Ihsan Naufal Muafiry, Teguh Nugraha Pratama, Agri Faturahman, Noersomadi, Febrylian Fahmi Chabibi, Punyawi Jamjareegulgarn   +9 more
wiley   +1 more source

Evolution of the interplanetary magnetic field [PDF]

, 1994
Remote observations of magnetic field topologies in the solar corona and in situ observations of the solar wind and interplanetary magnetic field (IMF) in interplanetary space are used to examine the temporal evolution of the spatial distribution of open and closed field regions emanating from the Sun.
openaire   +1 more source

Effects of Waves on the Spectral Anisotropy of the Transition Range in Solar Wind Turbulence

The Astrophysical Journal
In the transition range of the solar wind turbulence, the magnetic spectrum has been observed to be strongly anisotropic with respect to the local mean field. However, the generation mechanism of the anisotropy remains not well understood.
Hua Zhang, Xin Wang, Haochen Yuan
doaj   +1 more source

System Identification Based Models for Electron Fluxes Measured by GOES 16

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract System identification is employed to develop a set of models to forecast the electron fluxes at geostationary orbit. The energy of the electron fluxes are based on the measurements of (GOES 16) (MPS‐HI). The GOES 16 generation of spacecraft measures a wide range of electron energies, 10 energy channels from 50 keV to 4 MeV, compared to its ...
R. J. Boynton, H.‐L. Wei, M. Mahfouf, M. A. Balikhin   +3 more
wiley   +1 more source

Synoptic Maps of Solar Magnetic Field and Open Magnetic Flux

The Astrophysical Journal
The interplanetary magnetic field (IMF) measured near Earth can be up to 2 times greater than that derived from models using remote solar observations.
Yang Liu, C. Nick Arge, Shaela I. Jones, Andrew Leisner, Ruizhu Chen, J. Todd Hoeksema   +5 more
doaj   +1 more source

Low-frequency Waves Due to Newborn Interstellar Pickup Ions Observed from 43 to 47 au by the Voyager 1 Spacecraft

The Astrophysical Journal, 2023
Interstellar neutral atoms enter the heliosphere at a relatively slow speed corresponding to the motion of the Sun through the local interstellar medium, which is approximately 25 km s ^−1 .
Lily A. Ercoline, Charles W. Smith, Matthew R. Argall, Colin J. Joyce, Philip A. Isenberg, Bernard J. Vasquez, Nathan A. Schwadron, Justyna M. Sokół, Leonard F. Burlaga   +8 more
doaj   +1 more source

Mars' O+ ${\mathbf{O}}^{+}$ and O2+ ${\mathbf{O}}_{\mathbf{2}}^{+}$ Ion Escape During Disappearing Solar Wind Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Disappearing solar wind events (DSWEs), intervals when the solar wind proton density <1 cm−3 ${\text{cm}}^{-3}$, represent one extreme of the Mars solar wind interaction. Using data from NASA's Mars Atmosphere and Volatile Evolution (MAVEN) mission from February 2016 to May 2024, 154 orbits across 90 unique days were identified.
N. R. Schnepf, Y. Dong, H.‐W. Shen, J. S. Halekas, W. K. Peterson, K. G. Hanley, S. Shaver, A. Azari, N. Jones, D. Brain, E. M. B. Thiemann, J. R. Espley, J. P. McFadden   +12 more
wiley   +1 more source

Theta Aurora: Transpolar Arcs Linked to a Folded Magnetotail Neutral Sheet

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Nightside‐originating transpolar arcs (TPAs) represent a distinct mechanism of magnetosphere‐ionosphere energy transfer during northward IMF conditions. Nightside‐originating TPAs originate from the nightside auroral oval and grow across the polar cap to connect to the dayside, appearing to cross multiple topological boundaries as they develop.
S. C. Hill, T. I. Pulkkinen, A. Kullen, A. Brenner, M. Ala‐Lahti, Q. Al Shidi, A. Mukhopadhyay, S. Zou, M. Liemohn, A. N. Jaynes   +9 more
wiley   +1 more source

Bow Shock Current Closure Through the Magnetosheath for Non‐Zero IMF By—Results From Hybrid Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The bow shock current (BSC) flows on the bow shock due to the compression of the interplanetary magnetic field (IMF) across the shock. Although previous studies have shown that the BSC can connect to magnetospheric current systems via the magnetosheath, it is still not known how this happens.
G. Semrén, M. Hamrin, S. Fatemi, E. Krämer, L. Macke, T. Karlsson, T. Pitkänen, P. Dredger, R. E. Lopez, O. Goncharov, S. E. Milan   +10 more
wiley   +1 more source

Spectral Anisotropy at Ion Scales in the Solar Wind Upstream of the Martian Bow Shock

The Astrophysical Journal
The spectral anisotropy of magnetic field fluctuations at ion scales in the solar wind upstream of the Martian bow shock remains poorly understood. In the solar wind near the Earth’s orbit, such anisotropy is known to be modulated by ion-scale waves ...
Hua Zhang, Xin Wang, Ruihui Yu, Binbin Tang   +3 more
doaj   +1 more source