Results 121 to 130 of about 30,979 (263)

The Study of the Pioneer Anomaly: New Data and Objectives for New Investigation

, 2005
Radiometric tracking data from Pioneer 10 and 11 spacecraft has consistently indicated the presence of a small, anomalous, Doppler frequency drift, uniformly changing with a rate of ~6 x 10^{-9} Hz/s; the drift can be interpreted as a constant sunward ...
Asmar S. W., Dyal P., Dyal P., EUNICE L. LAU, Fimmel R. O., Fimmel R. O., Fimmel R. O., KYONG J. LEE, LARRY R. KELLOGG, Milgrom M., SLAVA G. TURYSHEV, VIKTOR T. TOTH   +11 more
core   +1 more source

Are Cusp‐Aligned Arcs the Equivalent of Auroral Streamers in a Closed Magnetosphere?

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract We present the first observations of a 3‐hour quasi‐periodic intensification of the polar auroras during a prolonged interval of strongly‐northward interplanetary magnetic field (IMF). This takes the form of a localized spot of auroral emission that appears near the pole which subsequently spreads sunward and antisunward to produce a sun ...
S. E. Milan, M. K. Mooney, G. E. Bower, G. Kennedy, X.‐Y. Wang, B. Hubert, M. R. Hairston, L. J. Paxton   +7 more
wiley   +1 more source

Spontaneous Hot Flow Anomalies in Earth's Foreshock

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract In recent years, we have learned that foreshock transients play an influential role in solar wind coupling with Earth's magnetosphere. These transients include spontaneous hot flow anomalies (SHFAs), which are characterized by dips in magnetic field magnitude and ion density, enhanced temperature, decelerated and deflected solar wind flow, and
D. Rojas‐Castillo, X. Blanco‐Cano, P. Kajdič   +2 more
wiley   +1 more source

Nonlinear Electron Interactions With Intense VLF Waves From Transmitters

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract The impact on electron lifetimes of nonlinear interactions with the most intense very low frequency (VLF) waves from transmitters has hitherto been neglected in radiation belt codes. Here, we show the presence of a small population of intense wave packets, originating from ground‐based VLF transmitters and reaching 10 mV/m around the magnetic ...
Didier Mourenas, Xiao‐Jia Zhang, Sergei Kamaletdinov, Anton V. Artemyev, Yangyang Shen, Qianli Ma   +5 more
wiley   +1 more source

CNN‐Based Model for 3D CME Parameter Prediction – A Proof of Concept

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Accurate 3D reconstruction of coronal mass ejections (CMEs) is essential for understanding their propagation and improving space weather forecasts. In this study, we present a proof‐of‐concept deep learning framework that predicts seven parameters from synthetic multi‐view coronagraph images.
Harshita Gandhi, Huw Morgan, Cory Thomas
wiley   +1 more source

Intensities and spatiotemporal variability of equatorial noise emissions observed by the Cluster spacecraft [PDF]

, 2015
F. Němec, O. Santolı́k, Zuzana Hrbáčková, N. Cornilleau‐Wehrlin   +3 more
openalex   +1 more source

The Analysis of the Ionospheric Radio Occultation Data Coverage for ANCHOR Ionospheric Data Assimilation

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC‐1 and COSMIC‐2) missions provide global observations of atmospheric and ionospheric conditions using Global Navigation Satellite System (GNSS) radio occultation (RO).
Victoriya V. Forsythe, Jan‐Peter Weiss, Irfan Azeem, William Gullotta, Sarah E. McDonald, Katherine A. Zawdie, Emily C. Morgan, Douglas P. Drob   +7 more
wiley   +1 more source

Analysis of Field-Aligned Currents in the High-Altitude Nightside Auroral Region: Cluster Observation

Journal of Astronomy and Space Sciences, 2019
In this paper we present analysis of current density when the Cluster spacecraft pass the nightside auroral region at about 4-5 RE from the center of Earth. The analysis is made when the inter-spacecraft separation is within 200 km, which allows all four
Youra Shin, Ensang Lee, Jae-Jin Lee
doaj   +1 more source

Four‐Peak Structure on Equatorial Ionization Anomaly Crests During the May 2024 Geomagnetic Storms

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This study investigates the four‐peak electron density structure in the Equatorial Ionization Anomaly (EIA) during the intense geomagnetic storms of 10–20 May 2024, utilizing dayside data at ∼500 km from the China Seismo‐Electromagnetic Satellite (CSES‐01).
Weixing Pu, Yanyan Yang, Rui Yan, Shun‐Rong Zhang, Chao Xiong, Roberto Battiston, Zeren Zhima, Piersanti Mirko, He Huang, Giulia D’Angelo, Xiaoying Sun, Yuyang Huang, Zihang Wang   +12 more
wiley   +1 more source

Evolution of kinklike fluctuations associated with ion pickup within reconnection outflows in the Earth's magnetotail

, 2009
Magnetic reconnection (MR) in Earth's magnetotail is usually followed by a systemwide redistribution of explosively released kinetic and thermal energy.
A. Runov, Erkaev N., Grinsted A., Laitinen T., M. P. Leubner, Runov A., Sergeev V., Sergeev V., V. Angelopoulos, W. Baumjohann, Z. Vörös, Zhang T.   +11 more
core   +1 more source