This picture is from a model of how the earth's magnetic field is generated.
Click on image for full size
Glaztmeir and Roberts of LANL
The Generation of Jupiter's Magnetosphere
Magnetospheres are generated with 1.) magnetic materials and 2.) with motions within the magnetic material.
The terrestrial planets generate magnetospheres within the iron cores at the center. This leads to dipole-shaped, rounded magnetic fields. Jupiter has almost no iron core, certainly not a large enough one to be responsible for it's enormous magnetic field.
The magnetic material of Jupiter is found within the liquid metallic shell found within Jupiter. Motions within that shell produce magnetic field. Because these currents are generated within a shell, they produces a magnetic field with a much stronger quadrupole-component. The quadrupole component contributes to making Jupiter's magnetic field more pointed and bullet-shaped.
Shop Windows to the Universe Science Store!
Our online store
on science education, ranging from evolution
, classroom research
, and the need for science and math literacy
You might also be interested in:
The first liquid layer inside Jupiter, immediately under the atmosphere, is the liquid hydrogen layer. The hydrogen atmosphere becomes thicker and thicker, a fog with more and more liquid hydrogen droplets,...more
Jupiter's magnetosphere is very pointed and bullet-shaped, as shown in this picture, because of the nature of how it is created. The magnetosphere has many parts, such as the bow shock, magnetospheath,...more
Jupiter's magnetosphere is a unique object in the solar system. It is the biggest object in the entire solar system. Not only is it big enough to contain all of Jupiter's moons, but the sun itself could...more
A magnetometer is an instrument for measuring magnetic fields. Many spacecraft carry magnetometers to measure the magnetic fields around planets they orbit or fly by. When a spacecraft takes such measurements,...more
The planet Uranus has an odd magnetic field. The planet's magnetic poles are nowhere near the geographic poles (as defined by the spin axis) of Uranus. A portion of the magnetic field of Uranus is a dipole...more
A satellite which has an atmosphere, such as Jupiter's moon Io, and which also is inside a magnetosphere (unlike the Earth's moon), will leave a cloud of particles behind as it orbits the planet. This...more
Jupiter's magnetosphere is practically all plasmasphere. Jupiter's magnetosphere is filled with plasma. Most of the plasma comes from the donut-shaped cloud (torus) of material from Io. Besides ions and...more