Results 71 to 80 of about 20,985 (231)

Research in particles and fields [PDF]

Investigations, by particle-detectors flown on spacecraft, of the astrophysical aspects of cosmic radiation and the radiation environment of the earth are reported along with the research of the interplanetary medium, and planetary magnetic fields.
Vogt, R. E.
core   +1 more source

Poleward Disturbances in Thermospheric Winds During the 3–4 November 2021 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract This study focuses on ionosphere‐thermosphere coupling over North America during the 3–4 November 2021 strong geomagnetic storm (Kp 8−). We comprehensively analyze storm‐time ionospheric and thermospheric disturbances using data from ground‐based instruments at Poker Flat, Millstone Hill, and Urbana, as well as satellite observations and model
Jonna Wehmeyer, Yoshihiro Tomikawa, Takanori Nishiyama, Yasunobu Ogawa, Eframir Franco‐Diaz   +4 more
wiley   +1 more source

Lunar response to the time-varying interplanetary magnetic field and application to the ALSEP magnetometer experiment [PDF]

Mathematical model for predicting lunar response to time varying interplanetary magnetic fields and its applicability to interpretation of ALSEP magnetometer ...
Blank, J. L., Sill, W. R.
core   +1 more source

A New Method for Probabilistic Spatiotemporal Forecasts of Solar Soft X‐Ray “S‐Class” (>X10) Superflares

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Solar superflares of S‐class (>X10 in soft X‐rays) pose extreme space weather hazards, yet their prediction remains a fundamental challenge owing to their rapid and transient natures and the limitations of conventional event‐based forecasts. We introduce for the first time, a probabilistic spatiotemporal framework designed to identify extended
V. M. Velasco Herrera, G. Velasco Herrera, W. Soon, A. Özgüç, N. Babynets, A. Tlatov, M. Švanda, S. Qiu, S. Baliunas, B. Kotan, G. González González, L. A. Bautista Flores, M. Pazos   +12 more
wiley   +1 more source

Analytical Verification of the Normal Vector Determination Methods for Planar Magnetic Structures

The Astrophysical Journal
Minimum variance analysis of magnetic fields (MVAB) is conventionally implemented to determine the normal vector of a planar magnetic structure (PMS) for which the average of the normal magnetic field component vanishes (i.e., $\left\langle {B}_{n}\right\
Wai-Leong Teh
doaj   +1 more source

Magnetometer data analysis Final report, 30 Jul. 1969 - 31 May 1970 [PDF]

Statistical relationships between geomagnetic fields and interplanetary magnetic ...

core   +1 more source

Galactic Cosmic Ray Ionization on Uranus; Geomagnetic Latitude Dependencies

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Galactic Cosmic Rays (GCRs) are a major source of atmospheric ionization, influencing ion abundance, aerosol formation, and electrical processes. GCR‐induced effects are expected to be more pronounced on Uranus than planets closer to the Sun for two reasons; reduced solar irradiance, and weaker solar modulation of incident GCR.
Ola Al‐Khuraybi, Karen L. Aplin, Alberto Gambaruto   +2 more
wiley   +1 more source

Non-Parker Spiral Interplanetary Magnetic Field Configurations Observed in Near-Earth Space: Statistical Features of Their Occurrence and Solar Wind Conditions

The Astrophysical Journal Supplement Series
In near-Earth space, the interplanetary magnetic field (IMF) is generally characterized by the Parker spiral configuration with a spiral angle of approximately 45° clockwise from the radial axis of the Sun.
Jong-Sun Park, Quanqi Shi, Jungjoon Seough, Hui Zhang, Tao Tang, Ruilong Guo, Kyung-Suk Cho, Dong-Hun Lee, Khan-Hyuk Kim   +8 more
doaj   +1 more source

The Influence of Interplanetary Magnetic Field Direction on Martian Crustal Magnetic Field Topology

Geophysical Research Letters, 2020
AbstractCrustal magnetic fields influence a range of plasma processes at Mars, guiding the flow of energy from the solar wind into the planet's atmosphere at some locations while shielding the atmosphere at others. In this study we investigate how the topology of crustal fields varies with changes in the direction of the incoming interplanetary ...
Tristan Weber, David Andrew Brain, Shaosui Xu, David L. Mitchell, Jared Randolph Espley, Jasper S. Halekas, Christian Mazelle, Robert James Lillis, Gina A. DiBraccio, Bruce M. Jakosky   +9 more
openaire   +2 more sources

Segmentation and Tracking of Eruptive Solar Phenomena With Convolutional Neural Networks

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Solar eruptive events are complex phenomena, which most often include coronal mass ejections (CME), CME‐driven compressive and shock waves, flares, and filament eruptions. CMEs are large eruptions of magnetized plasma from the Sun's outer atmosphere or corona, that propagate outward into the interplanetary space.
Oleg Stepanyuk, Kamen Kozarev
wiley   +1 more source