Results 31 to 40 of about 1,320 (193)

Extension of the Photospheric Magnetic Field Into Interplanetary Space [PDF]

open access: yesThe Astrophysical Journal, 1965
Comparison of interplanetary magnetic field measurements made by Imp-I satellite and those obtained with solar magnetograph at Mount ...
John M. Wilcox, Norman F. Ness
openaire   +1 more source

The Structure and Origin of Switchbacks: Parker Solar Probe Observations

open access: yesThe Astrophysical Journal, 2023
Switchbacks are rapid magnetic field reversals that last from seconds to hours. Current Parker Solar Probe (PSP) observations pose many open questions in regard to the nature of switchbacks.
Jia Huang   +27 more
doaj   +1 more source

Magnetic topology of coronal mass ejection events out of the ecliptic: Ulysses/HI-SCALE energetic particle observations [PDF]

open access: yesAnnales Geophysicae, 2003
Solar energetic particle fluxes (Ee > 38 keV) observed by the ULYSSES/HI-SCALE experiment are utilized as diagnostic tracers of the large-scale structure and topology of the Interplanetary Magnetic Field (IMF) embedded within two well ...
O. E. Malandraki   +3 more
doaj   +1 more source

Power spectra of the interplanetary magnetic field [PDF]

open access: yesSolar Physics, 1969
Power spectra studies of interplanetary magnetic field fluctuations based on data from Pioneer 6 space ...
James W. Sari, Norman F. Ness
openaire   +1 more source

Image Encoding With Blipped Gradients in an Echo Train

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2530-2538, November 2026.
ABSTRACT Purpose An MRI scanner was designed and built to encode k‐space points in the spin echoes occurring between 180∘ pulses in an echo train by using blipped B0 gradient pulses applied just prior to those spin echoes. Methods The proposed MRI scanner is a modification of an original design that used TRansmit Array Spatial Encoding (TRASE), a built‐
Logi Vidarsson, Gordon E. Sarty
wiley   +1 more source

Heliospheric Diffusion of Stochastic Parker Spirals in Radially Evolving Solar Wind Turbulence

open access: yesThe Astrophysical Journal
 We present a stochastic field line mapping model where the interplanetary magnetic field lines are described by a density distribution function satisfying a Fokker–Planck equation that is solved numerically.
N. H. Bian   +3 more
doaj   +1 more source

Open Magnetic Fields in the Martian Magnetosphere Revealing Dipole-like Intrinsic Magnetic Fields at Mars

open access: yesThe Astrophysical Journal Letters, 2023
Mars’s magnetosphere is hybrid, having contributions from both an induced magnetosphere like Venus and the localized crustal magnetic fields. However, the planetary fields also include large-scale, more global components.
Shaosui Xu   +12 more
doaj   +1 more source

Radio Sounding Determination of Two‐Dimensional Plasma Structure Velocity

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The Mars spacecraft Tianwen‐1 transmitted radio signals to Earth for its orbit determination. The frequencies of the radio signals exhibited sharp variations when an ICME passed through the Mars‐Earth signal path on 18 June 2021. These sharp variations were observed at different ground stations at different times. This was most probably caused
Qingbao He, Qinghui Liu, Yongzhang Yang
wiley   +1 more source

Characterization of Small Flux Ropes Using Juno Spacecraft Cruise-phase Data

open access: yesThe Astrophysical Journal
In this study, we utilize magnetic field data from the Juno mission’s cruise phase to visually identify and analyze 338 interplanetary small flux ropes (SFRs) across a heliocentric distance range of 1–5.5 au.
Sahanaj A. Banu   +7 more
doaj   +1 more source

First Observation of Four‐Band Ion Cyclotron Whistlers

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen   +6 more
wiley   +1 more source

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