Magnetospher1 - Magnetosphere Enhanced-color Galileo...

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Magnetosphere Enhanced-color Galileo spacecraft image of Ganymede's trailing hemisphere. [64] The crater Tashmetum's prominent rays are at lower right, and the large ejecta field of Hershef at upper right. Part of dark Nicholson Regio is at lower left, bounded on its upper right by Harpagia Sulcus. The Galileo craft made six close flybys of Ganymede from 1995–2000 (G1, G2, G7, G8, G28 and G29) [17] and discovered that Ganymede has a permanent (intrinsic) magnetic moment independent of the Jovian magnetic field. [65] The value of the moment is about 1.3 × 10 13 T·m 3 , [17] which is three times larger than the magnetic moment of Mercury . The magnetic dipole is tilted with respect to the rotational axis of Ganymede by 176°, which means that it is directed against the Jovian magnetic moment. [17] Its north pole lies below the orbital plane . The dipole magnetic field created by this permanent moment has a strength of 719 ± 2 nT at the equator of the moon, [17] which should be compared with the Jovian magnetic field at the distance of Ganymede—
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Magnetospher1 - Magnetosphere Enhanced-color Galileo...

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