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Author Topic: From where does the Sun's magnetic field arise?  (Read 1848 times)

rhlopez

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From where does the Sun's magnetic field arise?
« on: 24/12/2008 16:05:24 »
Ricardo asked the Naked Scientists:
Hi,

What causes the magnetic field of the sun and the earth?
Is it the same thing?

Thanks,
Ricardo

What do you think?


 

Offline Supercryptid

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From where does the Sun's magnetic field arise?
« Reply #1 on: 24/12/2008 17:54:20 »
They are related, but are not caused by exactly the same thing.

Magnetism is generated by moving electric charges. The Sun is made mostly of plasma. Plasma contains a large number of ions and electrons. The spinning of the Sun in combination with these moving charged particles generates a magnetic field.

In Earth, the moving electric charges come from the metal in the Earth's outer core. It is made of molten metal, which, like plasma, contains ions and electrons. The same effect arises as in the Sun.

So the Sun's magnetic field comes from ionized gases, whereas it arises on Earth from molten metal.
 

Offline Mr. Scientist

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From where does the Sun's magnetic field arise?
« Reply #2 on: 24/12/2008 18:57:44 »
Ricardo asked the Naked Scientists:
Hi,

What causes the magnetic field of the sun and the earth?
Is it the same thing?

Thanks,
Ricardo

What do you think?
Magnetic hotspots on the suns surface also causes about, 55% of all the magnetic flux surrounding the sun. The sun is about 333,000 times heavier in mass, and about a million times larger, it obviously generates a magnetic field many times greater in magnitude than Earth itself. In fact, i calculate it's about 333,000 times smaller, which is the same value of the mass difference.

The Earth's magnetic field generate from its poles, and here lyes a clue in the origin of magnetism, because like a similar rule for electrically-charged particles, spin can have the Eigenstates as magnetism, under Maxwells Laws of Electromagnetism. It has been hypothesized by many modern scientists to date, that spin may even give rise to the magnetic field itself.

From  relativistic approach, this phenomenon is solved, as the last poster points out that a moving body creates a magnetic field. A rotation by center axis would also generate its own magnetic field, as a rotational inertia.

(Most of the magnetic influence) does come from the Earth's out core, however, only by a fraction. The rotational generation of magnetism would eminate from the center of mass, along its own axis and path. But the suns magnegtic field cannot in general cannot be said to be ionic (unstable atom gas), but rather, mostly caused by unstable nuclear processes at its photosphere, where it allows providences (the last one here, is short burts of gamma gas into space itself. These erruptions are stimulated, by modern theory, by the magnetic pulses of hot spots.

But there's my two cents...
 

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From where does the Sun's magnetic field arise?
« Reply #2 on: 24/12/2008 18:57:44 »

 

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