Results 121 to 130 of about 3,881 (215)

Radiowave scattering and ultra-long-baseline interferometry [PDF]

open access: yes
Interstellar scattering can irretrievably blur the images of compact radio sources when examined with extremely high resolution. Because of this effect, diffraction limited observations of extragalactic sources with an Earth-Moon baseline will only be ...
Dennison, Brian
core   +1 more source

The use of various interplanetary scintillation indices within geomagnetic forecasts

open access: yesAnnales Geophysicae
Interplanetary scintillation (IPS), the twinkling of small angular diameter radio sources, is caused by the interaction of the signal with small-scale plasma irregularities in the solar wind.
E. A. Lucek, T. D. G. Clark, V. Moore
doaj  

Plasma structuring within an expanded polar cap and cusp studied with the SS-520-3 sounding rocket. [PDF]

open access: yesEarth Planets Space
Buschmann LM   +12 more
europepmc   +2 more sources

Evidence of Substorm‐Driven Penetration Electric Field Contributions to Low‐Latitude Phenomena: Enhanced Upward Drifts, Plasma Bubble Development and Severe Scintillation

open access: yesSpace Weather
In this work, it is demonstrated that substorm‐driven penetration electric fields can efficiently enhance the upward plasma transport, favoring the development and structuring of plasma irregularities and the occurrence of scintillation on L‐band signals.
J. Sousasantos   +4 more
doaj   +1 more source

Research in space physics at the University of Iowa [PDF]

open access: yes
Energetic particles in outer space and their relationship to electric, magnetic, and electromagnetic fields associated with the earth, sun, moon, and planets, and the interplanetary medium are investigated.
Vanallen, J. A.
core   +1 more source

The solar causes of major geomagnetic storms

open access: yesAnnales Geophysicae
In this paper we reanalyse the set of ten major geomagnetic storms which occurred between August 1978 and December 1979. We relate them to the characteristics of the solar wind disturbances which caused them and the solar sources of such disturbances as ...
S. Bravo, A. L. Rivera
doaj  

Defining the Middle Corona. [PDF]

open access: yesSol Phys, 2023
West MJ   +41 more
europepmc   +1 more source

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