Results 191 to 200 of about 1,371,683 (237)
Some of the next articles are maybe not open access.
1974
Jupiter is a copious source of radiowaves having a wavelength of 3–75 cm. The radiation is 20% or so linearly polarized perpendicular to the planet rotation axis, does not vary much in intensity over the entire range of observed frequencies, and changes slowly in intensity over a time interval of the order of a few years.
D. B. Beard, J. L. Luthey
openaire +1 more source
Jupiter is a copious source of radiowaves having a wavelength of 3–75 cm. The radiation is 20% or so linearly polarized perpendicular to the planet rotation axis, does not vary much in intensity over the entire range of observed frequencies, and changes slowly in intensity over a time interval of the order of a few years.
D. B. Beard, J. L. Luthey
openaire +1 more source
Nature, 1979
Several decades of observations have failed to resolve the problem of the interpretation of extended extragalactic radio sources1,2. Most current models invoke the ejection of pairs of plasmoids or relativistic electron beams from the parent elliptical galaxy by various mechanisms3–5. As these theories generally predict the relative orientations of the
openaire +1 more source
Several decades of observations have failed to resolve the problem of the interpretation of extended extragalactic radio sources1,2. Most current models invoke the ejection of pairs of plasmoids or relativistic electron beams from the parent elliptical galaxy by various mechanisms3–5. As these theories generally predict the relative orientations of the
openaire +1 more source
The radiation belts of Jupiter
Icarus, 1974The cloud of relativistic electrons which forms the Jupiter radiation belts at a distance of a few Jovian radii from the planet is considered. The inner belt is shown to consist of electrons with about three times the energy of those in the outer zone, and to have an equatorial density which is about one half the peak density in the outer zone.
openaire +1 more source
Nature, 1970
Dynamics of Geomagnetically Trapped Radiation By J. G. Roederer. (Physics and Chemistry in Space, Vol. 2.) Pp. xiv + 166. (Springer-Verlag: Berlin and New York, 1970.) 36 DM; $9.90.
openaire +1 more source
Dynamics of Geomagnetically Trapped Radiation By J. G. Roederer. (Physics and Chemistry in Space, Vol. 2.) Pp. xiv + 166. (Springer-Verlag: Berlin and New York, 1970.) 36 DM; $9.90.
openaire +1 more source
2003
For the low altitude region near the Earth (250-1000 km), where the human activity, both commercial as well as scientific, has greatly increased over the last decades, it is particularly important to accurately model the radiation environment. As we briefly noted in Chapter 1, measurements carried out since the 1950s have shown the existence of ...
openaire +1 more source
For the low altitude region near the Earth (250-1000 km), where the human activity, both commercial as well as scientific, has greatly increased over the last decades, it is particularly important to accurately model the radiation environment. As we briefly noted in Chapter 1, measurements carried out since the 1950s have shown the existence of ...
openaire +1 more source
Space Science Reviews, 1979
The recent close encounters of Pioneer-10 (December 1973) and Pioneer-11 (December 1974) with the planet Jupiter provided the first in situ observations of zenomagnetically trapped particle radiation. Such observations represented a major advance in planetary research.
openaire +1 more source
The recent close encounters of Pioneer-10 (December 1973) and Pioneer-11 (December 1974) with the planet Jupiter provided the first in situ observations of zenomagnetically trapped particle radiation. Such observations represented a major advance in planetary research.
openaire +1 more source
1982
Abstract : This report suggests that electrons trapped in a dipolar field can reproduce some of the observed distributions of emission from extended extragalactic radio sources if the electron pitch-angle distributions are sufficiently anisotropic.
openaire +1 more source
Abstract : This report suggests that electrons trapped in a dipolar field can reproduce some of the observed distributions of emission from extended extragalactic radio sources if the electron pitch-angle distributions are sufficiently anisotropic.
openaire +1 more source
Reviews of Geophysics, 1982
This paper reviews the status of radiation belt science at the close of the data acquisition phase (1976–1979) of the International Magnetospheric Study. The purpose is to place recent discoveries in context with respect to long‐standing problems and to indicate possible directions for future research in radiation belt physics.
openaire +1 more source
This paper reviews the status of radiation belt science at the close of the data acquisition phase (1976–1979) of the International Magnetospheric Study. The purpose is to place recent discoveries in context with respect to long‐standing problems and to indicate possible directions for future research in radiation belt physics.
openaire +1 more source
Physics Today, 1966
EIGHT YEARS of space experimentation have elapsed since James A. Van Allen, George H. Ludwig, Carl E. McIlwain and E. C. Ray discovered the earth's radiation belts with a Geiger counter on the Explorer 1 satellite. Almost every flight since has offered the opportunity of finding a different particle, a new energy distribution or an unusual space or ...
openaire +1 more source
EIGHT YEARS of space experimentation have elapsed since James A. Van Allen, George H. Ludwig, Carl E. McIlwain and E. C. Ray discovered the earth's radiation belts with a Geiger counter on the Explorer 1 satellite. Almost every flight since has offered the opportunity of finding a different particle, a new energy distribution or an unusual space or ...
openaire +1 more source
The Stability of the Van Allen Radiation Belt
SIAM Journal on Applied Mathematics, 1979In this paper we derive two classes of invariant tori which lie on energy surfaces which are large enough to accommodate the charged particles in the Van Allen radiation belt.
openaire +2 more sources