Results 21 to 30 of about 35,714 (290)
Active Regions and the Interplanetary Magnetic Field [PDF]
Symposium - International Astronomical Union, 1968 The relation of solar active regions to the large-scale sector structure of the interplanetary field is discussed. In the winter of 1963–64 (observed by the satellite IMP-1) the plage density was greatest in the leading portion of the sectors and lesser in the trailing portion of the sectors. The boundaries of the sectors (places at which the direction
John M. Wilcox +2 more
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Correlation Between Monthly Cumulative Auroral Electrojet Indices, DST Index and Interplanetary Electric Field During Magnetic Storms [PDF]
Journal of Astronomy and Space Sciences, 2005 Magnetospheric substorms occur frequently during magnetic storms, suggesting that the two phenomena are closely associated. We can investigate the relation between magnetospheric substorms and magnetic storms by examining the correlation between AE and ...
Yoon-Kyung Park +2 more
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The Astrophysical Journal, 2023 In particular during the descending phase of the solar cycle, Alfvén waves in the high-speed solar wind streams are a major form of interplanetary disturbances.
Lei Dai +8 more
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Lessons from a career in space physics
Frontiers in Astronomy and Space Sciences, 2022 Frameworks for describing magnetospheric substorms are as good as the data on which they are based. While disturbances in the ionosphere are well described by existing data bases, the plasma and field data acquired by satellites in the magnetosphere are ...
Gordon Rostoker
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Earth and Space Science, 2020 To study synodic period and its subharmonics, we have utilized hourly average data of solar wind plasma field, geomagnetic index, and galactic cosmic ray intensity along with 5 min average data of selected solar wind field parameters during the recent ...
Y. P. Singh
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Analysis of cosmic ray dynamics and ionospheric parameters during increased solar activity and magnetic storms [PDF]
E3S Web of Conferences, 2019 Based on the ground station data, the paper investigates the dynamics of space rays and ionospheric parameters during strong and moderate magnetic storms 2018.
Mandrikova Oksana +2 more
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Revised time-of-flight calculations for high-latitude geomagnetic pulsations using a realistic magnetospheric magnetic field model [PDF]
, 2005 We present a simple time-of-flight analysis of Alfvén pulsations standing on closed terrestrial magnetic field lines. The technique employed in this study in order to calculate the characteristic period of such oscillations builds upon earlier time-of ...
Waters, C. L. +2 more
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32. Interplanetary magnetic field [PDF]
Symposium - International Astronomical Union, 1958 The magnetic field outside the sun (interplanetary magnetic field) is certainly far from a dipole field. A model of it has recently been suggested (Tellus,8, 1, 1956). This model is in agreement with cosmic ray and magnetic storm data and reconcilable with the coronal ray structure. Some possibilities to check the model are discussed.
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Magnetospheric access for solar protons during the January 2005 SEP event
Journal of Space Weather and Space Climate, 2018 The early phase of the extraordinary solar energetic particle 20 January, 2005 event having the highest peak flux of any SEP in the past 50 years of protons with energies > 100 MeV is studied.
Kalegaev Vladimir V. +3 more
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Propagation of low frequency geomagnetic field fluctuations in Antarctica: comparison between two polar cap stations [PDF]
Annales Geophysicae, 2007 We conduct a statistical analysis of the coherence and phase difference of low frequency geomagnetic fluctuations between two Antarctic stations, Mario Zucchelli Station (geographic coordinates: 74.7° S, 164.1° E; corrected geomagnetic ...
L. Santarelli, S. Lepidi, L. Cafarella
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