magnetosphere

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Related to magnetospheric: Magnetospheric Physics

magnetosphere:

see Van Allen radiation beltsVan Allen radiation belts,
belts of radiation outside the earth's atmosphere, extending from c.400 to c.40,000 mi (c.650–c.65,000 km) above the earth. The existence of two belts, sometimes considered as a single belt of varying intensity, was confirmed from information
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Earth's magnetosphere and magnetic field lines, shaped by the solar windclick for a larger image
Earth's magnetosphere and magnetic field lines, shaped by the solar wind

magnetosphere

(mag-nee -tŏ-sfeer) A region of space surrounding a planet within which charged particles are controlled by the magnetic field of the planet rather than by the Sun's magnetic field, which is carried by the solar wind (see interplanetary medium). The solar wind is the source of most of the charged particles, which form a tenuous gas known as a plasma. The region of a planet's magnetosphere is delimited by a boundary called the magnetopause and includes any radiation belts of the planet, such as the Van Allen belts of the Earth. The Earth's magnetosphere extends to 60 000 km on the sunward side of the planet but is drawn out by the solar wind into an elongated extension called a magnetotail stretching many times this distance on the side away from the Sun (see illustration). Magnetic reconnection of the magnetic field lines of the Sun and Earth occurs across the sunward surface of the magnetopause (at points where two lines are in opposing directions); reconnection allows energy and particles to be transferred to the magnetosphere from the solar wind. Above the magnetopause is a layer of turbulent magnetic field, the magnetosheath, enclosed by a shock wave where the smooth flow of solar-wind particles past the planet is first interrupted. Mercury, Jupiter, Saturn, Uranus, and Neptune are also known to possess magnetospheres. See also geospace.

magnetosphere

[mag‚′nēd·ə‚sfir]
(geophysics)
The region of the earth in which the geomagnetic field plays a dominant part in controlling the physical processes that take place; it is usually considered to begin at an altitude of about 60 miles (100 kilometers) and to extend outward to a distant boundary that marks the beginning of interplanetary space.

magnetosphere

magnetosphere
The magnetron produces oscillation because of the influence of a magnetic field on motion of electrons.
The upper part of the thermosphere where the earth's magnetic field plays a more important role in controlling the behavior of protons. Also called the protosphere
References in periodicals archive ?
h] is the inverse of the horizontal magnetic field component so as to pay extensive attention to the changes in minimum values for investigating the depression of ULF waves (of magnetospheric origin) observed on the ground as the ionospheric signature.
In principle it might be possible to do this by E-sailing in the giant planet's corotating magnetospheric plasma.
SAMPEX--the Solar, Anomalous, and Magnetospheric Particle Explorer-- continuously samples the Van Allen radiation belts around Earth.
While ionospheric testing in conjunction with satellite recording continued throughout this period, a special program was initiated in 1975 as part of the International Magnetospheric Study.
Also, we provide the time variations of these components for the people dealing with sun-weather relationships, as we are interested mainly in geomagnetism and magnetospheric physics.
Jupiter's satellite 10 produces a standing magnetospheric disturbance that has been studied in situ by spacecraft and remotely by telescopic observations.
Cosmic radiation comes from three sources: galactic cosmic rays, particles from the sun and magnetospheric particles.
The Mercury Magnetospheric Orbiter will have a highly elliptical orbit, enabling the cylindrical craft to investigate the outer edge of the planet's magnetic field, some 12,000 km from the surface.
SwRI has provided avionics systems for more than 60 missions without an on-orbit failure and currently serves as the principal investigator institution for NASA's Interstellar Boundary Explorer (IBEX), New Horizons and Juno missions, as well as for the Magnetospheric Multiscale (MMS) mission instrument suite.
Thales Alenia Space has recently been awarded one of three competitive studies funded by the European Space Agency (ESA) to lead the design definition of the Payload Module (PLM) for SMILE (Solar Wind Magnetospheric Ionospheric Link Explorer).
Once in orbit, the Japanese component of the mission, the Mercury Magnetospheric Orbiter, MMO, will be set spinning (for stability) and be released into an eccentric orbit to study the magnetic field, dust and environment of charged particles surrounding the planet.
7 million km, Juno will transmit the data gathered during its most recent close-in dash and sample the magnetospheric environment far from the planet.