Radiation Belts
Radiation Belts
The motion of energetic ions and electrons through space is strongly constrained by the local magnetic field.
Definition: radiation belt: Regions of charged particles in a magnetosphere.
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van Allen Radiation Belts
The Van Allen Belts are regions of high radiation trapped by the magnetosphere which are rotationally symmetric about Earth's magnetic axis (which is tilted and offset from Earth's rotational axis).
Van Allen Radiation Belt
The Van Allen radiation belt is a torus of energetic charged particles (i.e. a plasma) around Earth, trapped by Earth's magnetic field.
radiation belt
Regions of charged particles in a magnetosphere.
Rayleigh criterion; resolving power
A criterion for how finely a set of optics may be able to distinguish.
Radiation Belt
a ring-shaped region around a planet in which electrically charged particles (usually electrons and protons) are trapped. The particles follow spiral trajectories around the direction of the magnetic field of the planet.
radiation belt
Regions of charged particles in a magnetosphere.
radio
Electromagnetic radiation which has the lowest frequency, the longest wavelength, and is produced by charged particles moving back and forth; ...
radiation belts Zones or belts of charged particles that are trapped in magnetic fields around the Earth. [More Info]
radiation-dominated universe Early epoch in the universe, when the density of radiation in the cosmos exceeded the density of matter.
Radiation Belt
Radiation Fluxes
The composition of Jupiter's atmosphere offered some surprises, according to project scientists.
Radiation belts of high-energy particles trapped in the earth's magnetosphere.
Variable Star
A star whose brightness changes periodically.
The Van Allen radiation belts are two doughnut-shaped belts of ionized gas (plasma) that circle the Earth.
radiation belt (NASA SP-7, 1965) An envelope of charged particles trapped in the magnetic field of a spatial body. See Van Allen belt.
= Van Allen radiation belts.
The use of geocorona in sense 2 should be discouraged, since it conflicts with the relatively well-established usage in sense 1.
Explorer 1 (U.S.A) discovers Van Allen radiation belts.
1959 A.D. Luna 1 (U.S.S.R.) escapes Earth's gravity.
1959 A.D. Vanguard 2 (U.S.A.) takes first photos of Earth.
1959 A.D. Luna 2 (U.S.S.R.) hits the Moon.
1959 A.D.
Saturn's magnetosphere consists of a set of doughnut-shaped radiation belts in which electrons and atomic nuclei are trapped.
Converging magnetic field lines fairly close to the Earth can trap highly energetic particles so that they gyrate between hemispheres and slowly drift around the planet in two doughnut-shaped zones known as the Van Allen radiation belts.
The Earth's magnetic field and Van Allen radiation belts
It is well known that the axis of the magnetic field is tipped with respect to the rotation axis of the Earth.
Contributing to Jupiter's radiation belts are particles from its moons Io and Europa. Volcanoes on Io spew out sulfur and oxygen atoms that collect in a donut-shaped cloud (torus) along the moons' orbit.
"Outside the orbit of Tethys, the variability of Saturn's radiation belt might be enhanced in the coming years as we start approaching solar maximum," adds Roussos.
Pioneer 3 discovered a second radiation belt around Earth.
Pioneer 4 was the first American spacecraft to escape Earth's gravitational pull as it passed within 58,983 km (36,650 miles) of the moon.
Disturbances in the solar wind shake the Earth's magnetic field and pump energy into the radiation belts. Regions on the surface of the Sun often flare and give off ultraviolet light and x-rays that heat up the Earth's upper atmosphere.
17, 1965 memorandum of understanding between NASA and the German Ministry for Scientific Research (BMwF) initiated a cooperative project that would orbit a German scientific satellite to investigate the earth's inner radiation belt.
These particles create strong radiation belts. Around Io's orbit, the radiation belts are powerful enough to kill an unprotected human in a few minutes. That adds one more item to the list of Jupiter's superlatives: deadliest radiation belts.
During geomagnetic storms two regions of geospace, the radiation belts and the ionosphere, can become strongly disturbed. These disturbances interfere with the functioning of satellite communications and navigation (GPS) technologies.
The Galileo atmospheric probe discovered a new intense radiation belt between Jupiter's ring and the uppermost atmospheric layers. This new belt is approximately 10 times as strong as Earth's Van Allen radiation belts.
The trapped radiation belts near Jupiter present a hazard to spacecraft as do Earth's Van Allen belts, although the Jovian particle flux and distribution differ from Earth's.
Van Allen Radiation Belt
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Callisto's orbit is located just outside of Jupiter's main radiation belt.
The moon's crust is very ancient, dating back some four billion years to a time just shortly after the Solar System formed around our star, the Sun.
Van Allen belts: One of the radiation belts of high-energy particles trapped in Earth's magnetosphere.
variable star: A star whose brightness changes periodically.
velocity: A rate of travel that specifies both speed and direction.
Jupiter has three rings—Halo, Main, and Gossamer —similar to those of Saturn but much smaller and fainter. An intense radiation belt lies between the rings and Jupiter's uppermost atmospheric layers.
Integral orbits the Earth every three days, spending most of its time at altitudes of more than 40,000 km. This places the mission well above the Earth's radiation belts so their background contribution is removed.
The spacecraft ...
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programming error in its upper stage caused it to fall short of its goal. It reached an altitude of 113854 km above the Earth's surface, but fell back into the Pacific ocean two days later. It did map the extent of some of the Earth's radiation belts.
They also discovered"and survived"the perils of Jupiter's extensive radiation belts (somewhat like Earth's Van Allen belts, but on a much larger scale).
Van Allen Radiation Belt
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One of these belts, between Jupiter's ring and the outermost atmosphere, was discovered by the Galileo probe and came as a surprise to scientists. It is about ten times as strong as the earth's Van Allen radiation belts and contains mysterious ...
 See also: Earth, Field, Solar, Planet, Orbit
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