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Interplanetary Scintillation Power Spectra [PDF]

open access: yesAustralian Journal of Physics, 1976
Power spectrum measurements of interplanetary scintillation at 408 MHz show that an inverse power law spectrum provides the best description for all scintillating radio sources. The inverse power law index is reasonably constant at ~ 2·4 for solar elongation angles 8 > 10°, and this agrees well with spacecraft observations.
openaire   +1 more source

Estimating random transverse velocities in the fast solar wind from EISCAT Interplanetary Scintillation measurements [PDF]

open access: yesAnnales Geophysicae, 2002
Interplanetary scintillation measurements can yield estimates of a large number of solar wind parameters, including bulk flow speed, variation in bulk velocity along the observing path through the solar wind and random variation in transverse ...
A. Canals   +5 more
doaj   +1 more source

Interplanetary Scintillations of Cosmic Rays

open access: yesThe Astrophysical Journal, 1973
Statistically significant broad-band fluctuations or 'scintillations' in the high-energy (T about 1 GeV) cosmic-ray flux observed by neutron monitors are interpreted. A mechanism by which interplanetary magnetic-field fluctuations induce cosmic-ray scintillations is presented and shown to be in quantitative agreement with observation.
A. J. Owens, J. R. Jokipii
openaire   +1 more source

EISCAT measurements of the solar wind [PDF]

open access: yesAnnales Geophysicae, 1996
EISCAT observations of interplanetary scintillation have been used to measure the velocity of the solar wind at distances between 15 and 130 R⊙ (solar radii) from the Sun. The results show that the solar wind consists of two distinct components,
A. R. Breen   +7 more
doaj   +1 more source

Observations of interplanetary scintillation in China [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractThe Sun affects the Earth in multiple ways. In particular, the material in interplanetary space comes from coronal expansion in the form of solar wind, which is the primary source of the interplanetary medium. Ground-based Interplanetary Scintillation (IPS) observations are an important and effective method for measuring solar wind speed and ...
Li-Jia Liu, Bo Peng
openaire   +1 more source

The use of various interplanetary scintillation indices within geomagnetic forecasts [PDF]

open access: yesAnnales Geophysicae, 1996
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   +1 more source

Reconstruction of Helio-latitudinal Structure of the Solar Wind Proton Speed and Density [PDF]

open access: yes, 2015
The modeling of the heliosphere requires continuous three-dimensional solar wind data. The in-situ out-of-ecliptic measurements are very rare, so that other methods of solar wind detection are needed.
Bzowski, Maciej   +3 more
core   +2 more sources

Robust estimation of interplanetary scintillation [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1992
Interplanetary scintillation (IPS) is a random process, so measurements of its power are affected by self-noise. The noise process is therefore nonstationary whenever the mean IPS power changes, such as when performing drift scans across a radio source.
openaire   +1 more source

Interplanetary Scintillation in Jovian Decametric Radiation [PDF]

open access: yesThe Astrophysical Journal, 1967
L-pulses of Jupiter radiation, attributing 1-sec component of time structure on decametric emission to diffraction by solar wind ...
James N. Douglas, Harlan J. Smith
openaire   +1 more source

A Overview of Interplanetary Scintillation Method for Studying Solar Wind Physics [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1988
Interplanetary scintillation is the fluctuation produced in the apparent brightness of a radio source, due to refractive effects in the turbulent solar wind flowing from the sun.
S. Y. Kim   +4 more
doaj  

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