Results 61 to 70 of about 9,433 (226)

Space storm measurements of the July 2005 solar extreme events from the low corona to the Earth

, 2010
The Athens Neutron Monitor Data Processing (ANMODAP) Center recorded an unusual Forbush decrease with a sharp enhancement of cosmic ray intensity right after the main phase of the Forbush decrease on 16 July 2005, followed by a second decrease within ...
A. Hillaris, A. Papaioannou, Bastian, Bougeret, C. Caroubalos, Caroubalos, E. Mitsakou, H. Mavromichalaki, Kerdraon, Kontogeorgos, Kontogeorgos, Loewe, Mavromichalaki, Mavromichalaki, Miroshnichenko, P. Preka-Papadema, Papaioannou, X. Moussas, Yashiro   +18 more
core   +1 more source

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

Acceleration of an interplanetary shock through the magnetosheath: a global hybrid simulation

Frontiers in Astronomy and Space Sciences
According to most observations and simulations, interplanetary shocks slow down when they propagate through the magnetosheath. In this article, we present results from a self-consistent global hybrid PIC simulation of an interplanetary shock which, by ...
C. Moissard, C. Moissard, P. Savoini, D. Fontaine, R. Modolo   +4 more
doaj   +1 more source

Dawn‐Side Anomaly in Sudden Geomagnetic Field Responses to Solar Wind Pressure Discontinuities During the 10 May and 10 October 2024 Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Interactions of solar wind dynamic pressure (SWDP) discontinuities with Earth's magnetosphere cause geomagnetic Sudden Commencements (SCs). Typically, positive/negative SCs occur at low latitudes due to enhancements/reductions in SWDP.
Deeksha Rai, S. Tulasi Ram, B. Nilam, D. M. Oliveira, B. Remya, Anil Raghav, D. Chakrabarty, Abhishek Kumar, Shivam Parashar, Vipin K. Yadav, A. P. Dimri   +10 more
wiley   +1 more source

Electron Heating in 2D Particle-in-cell Simulations of Quasi-perpendicular Low-beta Shocks

The Astrophysical Journal
We measure the thermal electron energization in 1D and 2D particle-in-cell simulations of quasi-perpendicular, low-beta ( β _p = 0.25) collisionless ion–electron shocks with mass ratio m _i / m _e = 200, fast Mach number ${{ \mathcal M }}_{\mathrm{ms}}=1$
Aaron Tran, Lorenzo Sironi
doaj   +1 more source

Evolution of Anemone AR NOAA 10798 and the Related Geo-Effective Flares and CMEs

, 2008
We present a detailed examination of the features of the Active Region (AR) NOAA 10798. This AR generated coronal mass ejections (CMEs) that caused a large geomagnetic storm on 24 August 2005 with the minimum Dst index of -216 nT.
Alexander, Asai, Asai, Ayumi Asai, Bruzek, Delaboudiniére, Domingo, Forsyth, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gosling, Hale, Ishii, Kataoka, Kazunari Shibata, Ken'ichi Fujiki, Kojima, Kokubun, Kundu, Kurokawa, Lepping, Liu, Liu, Low, López Fuentes, Manoharan, Martin, Matsumoto, Mitsuo Oka, Mukai, Munro, Nagashima, Nat Gopalswamy, Rust, Ryuho Kataoka, Saito, Saito, Scherrer, Sheeley, Sheeley, Sheeley, Shibata, Shibata, Shibata, Takahashi, Takako T. Ishii, Terasawa, Tian, Tokumaru, Tokumaru, Tokumaru, Tousey, Verma, Vourlidas, Wang, Wang, Yashiro, Yokoyama, Yokoyama, Young, Zhang   +63 more
core   +1 more source

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin, A. Bruno, L. Blum, N. Cannady, T. G. Guzik, R. Kataoka, K. Munakata, Y. Akaike, S. Torii   +8 more
wiley   +1 more source

High-resolution Observations of Pickup-ion-mediated Shocks to 60 au

The Astrophysical Journal
This study provides a detailed analysis of 14 distant interplanetary shocks observed by the Solar Wind Around Pluto instrument on board New Horizons.
Bishwas L. Shrestha, David J. McComas, Eric J. Zirnstein, George Livadiotis, Heather A. Elliott, Pontus C. Brandt, Alan Stern, Andrew R. Poppe, Joel Parker, Elena Provornikova, Kelsi Singer, Anne Verbiscer, New Horizons Heliophysics Team   +12 more
doaj   +1 more source

Unique Observations of a Geomagnetic SI^+ -- SI^- Pair: Solar Sources and Associated Solar Wind Fluctuations

, 2010
The paper describes the occurrence of a pair of oppositely directed sudden impulses (SI), in the geomagnetic field ($\Delta$X), at ground stations, called SI${^{+}}$ -- SI${^{-}}$ pairs, that occurred between 1835 UT and 2300 UT on 23 April 1998. The SI${
A. C. Das, Bastian, Burlaga, Delaboudinière, Detman, Domingo, Dryer, Dryer, Dryer, Dungey, Eviatar, Fry, Gold, Goldstein, Goodrich, Gopalswamy, Heppner, Janardhan, Janardhan, Janardhan, Janardhan, Janardhan, K. Ahmed, Lazarus, Lu, McKenna-Lawlor, Mercier, Nishida, Odstrcil, P. Janardhan, R. G. Rastogi, Rastogi, Razdan, Rickett, Scherrer, Schrijver, Schwenn, Senior, Shen, Simnett, Simnett, Smart, Smith, Smith, Sonett, Sonett, Spiro, Stone, Susanta K. Bisoi, Takeuchi, Tóth, Vandegriff, Vasyliunas, Wolf   +53 more
core   +1 more source

Analyzing Geomagnetic Data From the Dusheti Observatory During the Intense Magnetic Storms of 2024

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Geomagnetic storms, intense disturbances in the Earth's magnetosphere, pose risks to both technology and human activity in space. In this study, we analyzed geomagnetic field measurements from the Dusheti Observatory in Georgia during the intense geomagnetic storms of March 3, March 24, and 11 May 2024.
Oleg Kharshiladze, Luka Tsulukidze, Aleksandre Ghurchumelia, Luca Sorriso‐Valvo, Khatuna Elbakidze, Emiliya Yordanova, Tamaz Matiashvili   +6 more
wiley   +1 more source