Results 71 to 80 of about 1,655 (241)

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

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

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

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

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

The 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, George C. Ho, Glenn M. Mason, Athanasios Kouloumvakos, Gang Li, Rachael J. Filwett, Maher Dayeh, Malik H. Walker, Sarah K. Vines, Robert F. Wimmer-Schweingruber, Javier Rodriguez-Pacheco   +10 more
doaj   +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

Updating the Electrostatic Model for Dust Impact Detection with Antenna Instruments

The 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, Zoltan Sternovsky, Antal Juhász, David Malaspina, Petr Pokorný   +4 more
doaj   +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

Long-lived Magnetic Switchbacks Tracked across 0.32 au through BepiColombo–Solar Orbiter Radial Alignment

The Astrophysical Journal Letters
Magnetic switchbacks, often observed in the near-Sun solar wind, have received increased interest in recent years due to their potential role in mediating the heating and acceleration of the solar wind, but their origin remains debated.
Mirko Stumpo, Simone Benella, Pier Paolo Di Bartolomeo, Andrea Larosa, Oreste Pezzi, Georgios Nicolaou, Domenico Trotta, Tommaso Alberti, Raffaella D’Amicis, Monica Laurenza, Andrea Verdini, Anna Milillo, Daniel Heyner, Alessandro Aronica, Lorenzo Biasiotti, Alessandro Brin, Luca Colasanti, Elisabetta De Angelis, Stavro Ivanovski, Adrian Kazakov, Valeria Mangano, Stefano Massetti, Martina Moroni, Alessandro Mura, Christina Plainaki, Grace Richards, Rosanna Rispoli, Roberto Sordini, H. U. Auster, D. Constantinescu, D. Fischer, I. Richter   +31 more
doaj   +1 more source

MMS Observations of Multi‐Species Wave‐Particle Interactions and Rapid Foreshock Evolution

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The ion foreshock is the region upstream of Earth's bow shock where magnetic field lines connect to the quasi‐parallel shock surface. Within this region, there exist a variety of backstreaming ion populations from the shock ramp that can generate ultra‐low frequency (ULF) waves through wave‐particle interactions. In this work, we use data from
Guan Le, Xochitl Blanco‐Cano, Yuxi Chen, Megha Pandya, Gangkai Poh, Hanying Wei, Scott Boardsen, Poshan Belbase, Christopher T. Russell, Daniel J. Gershman, Ian J. Cohen, S. A. Fuselier   +11 more
wiley   +1 more source