How much stronger is a magnetar's magnetic field than Earth's?

Answer

Up to a quadrillion times stronger

The magnetic field strength of a magnetar is cited as being incredibly potent, reaching magnitudes up to one quadrillion times greater than the magnetic field experienced on Earth. This extreme intensity is the defining characteristic that elevates magnetars above common neutron stars. To put this into perspective, this level of magnetic power is so immense that it is theorized to possess enough strength to fundamentally rearrange the atomic structure of surrounding matter. This scale far surpasses familiar magnetic sources; for comparison, the Sun's surface magnetic field is only about 1 Gauss, whereas a strong medical MRI might reach 30,000 Gauss, which pales in comparison to the magnetar's $10^{14}$ to $10^{15}$ Gauss range.

How much stronger is a magnetar's magnetic field than Earth's?

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