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Astronomy and Cosmology
Astronomy and Astrophysics
Radial dependence of the Sun's magnetic field
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[QUOTE="Charles Link, post: 6044880, member: 583509"] The sources for this magnetic field are currents that can be from different locations around the sun. The equation is apparently applicable at distances ## r ## from the center that are on the order of the radius of the sun. For this kind of close range behavior, you can not expect to see inverse square law type behavior. ## \\ ## Meanwhile, for magnetic fields, ## \nabla \cdot B=0 ## says that the magnetic lines of flux are conserved. For magnetic type sources, e.g. sources consisting of what can be approximated by something such as a cylindrical magnet with two poles, that doesn't necessarily mean that inverse square law behavior will occur. It simply means the flux lines for ## B ## are continuous as they go through the magnet and emerge from one end and return in the other. See [URL]https://www.google.com/imgres?imgurl=https://cramster-image.s3.amazonaws.com/definitions/DC-1506V1.png&imgrefurl=https://www.chegg.com/homework-help/definitions/lines-of-flux-4&h=294&w=374&tbnid=usduZoWH8y6jCM:&q=magnetic+lines+of+flux&tbnh=160&tbnw=203&usg=AFrqEzf7XxmTY5UTugkuN6XS3SxKXBU0SQ&vet=12ahUKEwikmtrR74HdAhVCAqwKHZ5-Ar4Q9QEwAHoECAcQBg..i&docid=OI2LEA5JrjsS7M&sa=X&ved=2ahUKEwikmtrR74HdAhVCAqwKHZ5-Ar4Q9QEwAHoECAcQBg[/URL] ## \\ ## And you might want to check the decimal place on your formula. A google shows the magnetic field of the sun near and around its surface is ## B \approx 1.0 ## gauss ## =0.0001 \, T ##. [/QUOTE]
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Radial dependence of the Sun's magnetic field
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