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The Spiral of the Interplanetary Magnetic Field - Windows to the Universe
The sun flings out solar wind particles in much the same manner as a garden sprinkler throws out water droplets.
The artist's drawing of the solar wind flow was provided courtesy of NASA.
The Spiral of the IMF
The solar wind is formed as the Sun's top layer blows off into space, carrying magnetic fields still attached to the Sun. Gusts form in the solar wind associated with violent events on the Sun.
Particles appear to flow into space as if they are spiraling out from the Sun, as shown in this figure. The figure shows what is referred to as the "spiral angle" of the IMF (interplanetary magnetic field).
For a planet to be affected by a blob of material being ejected by the Sun, the planet must be in the path of the blob.
You might also be interested in: The force of magnetism causes material to point along the direction the magnetic force points. As shown in the diagram to the left, the force of magnetism is illustrated by lines, which represent the force.
...more For a planet to be affected by a blob of material being ejected by the sun, the planet must be in the path of the blob, as shown in this picture. The Earth and its magnetosphere are shown in the bottom
...more AU stands for Astronomical Units. It is a useful way to measure the distances in interplanetary space. It is the distance between the Earth and the Sun, which is about 93 million miles. For reference,
...more The solar wind is formed as the Sun's top layer blows off into space, carrying magnetic fields still attached to the Sun. Gusts form in the solar wind associated with violent events on the Sun. Particles
...more The aurora we are most familiar with is the polar aurora. This is what people are talking about when they say the northern or southern lights. But there are other less-known aurora, such as SAR arcs.
...more This figure shows the effect of the aurora on the atmosphere. When FAC's enter the atmosphere and create the aurora, they heat the atmosphere suddenly and abruptly. This creates an impulse which travels
...more This picture shows the flowing of particles into and out of the auroral zone, as Field-Aligned currents (FAC's) take at short-cut through the atmosphere. Some of the particles entering the auroral zone
...more