Results 41 to 50 of about 1,805,233 (174)
Evidence for the interplanetary electric potential? WIND observations of electrostatic fluctuations [PDF]
Annales Geophysicae, 2002 In the solar wind at 1 AU, coherent electrostatic waveforms in the ion acoustic frequency range (~ 1 kHz) have been observed by the Time Domain Sampler (TDS) instrument on the Wind spacecraft.
C. Lacombe +9 more
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Radio Sounding Determination of Two‐Dimensional Plasma Structure Velocity
Geophysical 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
Radio Physics and Radio Astronomy, 2017 Purpose: Description of the solar wind investigation technique based on interplanetary scintillation observations of the decameter radio emission of space radio sources.
N. N. Kalinichenko +7 more
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Oscillations in the open solar magnetic flux with a period of 1.68 years: imprint on galactic cosmic rays and implications for heliospheric shielding [PDF]
Annales Geophysicae, 2004 An understanding of how the heliosphere modulates galactic cosmic ray (GCR) fluxes and spectra is important, not only for studies of their origin, acceleration and propagation in our galaxy, but also for predicting their effects (on technology and on the
A. Rouillard, M. Lockwood, M. Lockwood
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First Observation of Four‐Band Ion Cyclotron Whistlers
Geophysical 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
Universe, 2022 In solar cycles 23–24, solar activity noticeably decreased and, as a result, solar wind parameters decreased. Based on the measurements of the OMNI base for the period 1976–2019, the time profiles of the main solar wind parameters and magnetospheric ...
Yuri I. Yermolaev +8 more
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Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.Abstract Recent works suggest there are periods when the Sun encountered massive interstellar cold clouds which compressed the heliosphere to within Earth's orbit, exposing Earth to interstellar galactic cosmic rays and energetic particles of heliospheric origin.
Anna Nica +4 more
wiley +1 more source
On the heliolatitudinal variation of the galactic cosmic-ray intensity. Comparison with Ulysses measurements [PDF]
Annales Geophysicae, 2003 We study the dependence of cosmic rays with heliolatitude using a simple method and compare the results with the actual data from Ulysses and IMP spacecraft.
G. Exarhos, G. Exarhos, X. Moussas
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.Abstract Ultra‐low‐frequency waves in the magnetosphere often produce field line resonances with strong spatial gradients in wave amplitude. We analyze a form of drift resonance driven by these gradients near the resonant field line. This mechanism differs fundamentally from conventional gradient‐ and curvature‐driven drift resonance and predicts an ...
J. Liu +4 more
wiley +1 more source
Perspectives of Earth and Space Scientists, 2022 The first discovery of the space age was in the field of space physics and occurred with the Explorer 1 launch in 1958 and its observations of the radiation belts encircling Earth.
Mona Kessel
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