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==Magnetic Field== | ==Magnetic Field== | ||
Magnetars are primarily characterized by their extremely powerful magnetic field, which can often reach the order of ten [[Tesla|gigatesla]]s. These magnetic fields are hundreds of thousands of times stronger than any man-made magnet, and quadrillions of times more powerful than Earth's magnetic field. They are currently the most magnetic objects ever detected in the universe. | Magnetars are primarily characterized by their extremely powerful magnetic field, which can often reach the order of ten [[Tesla|gigatesla]]s. These magnetic fields are hundreds of thousands of times stronger than any man-made magnet, and quadrillions of times more powerful than Earth's magnetic field. They are currently the most magnetic objects ever detected in the universe. | ||
A magnetic field of 10 gigateslas is enormous relative to magnetic fields typically encountered on Earth. Earth has a [[Magnetosphere|Geomagnetic]] field of 30–60 microteslas, and a [[Neodymium|Neodymium-based]] rare earth magnet has a field of about 1 tesla, with a magnetic energy density of 4.0×105 J/m3. A 10 gigatesla field, by contrast, has an energy density of 4.0×1025 J/m3, with an E/c2 mass density >104 times that of lead. The magnetic field of a magnetar would be lethal even at a distance of 1000 km, tearing tissues due to the [[Diamagnetism]] of water. A magnetar can erase credit cards | A magnetic field of 10 gigateslas is enormous relative to magnetic fields typically encountered on Earth. Earth has a [[Magnetosphere|Geomagnetic]] field of 30–60 microteslas, and a [[Neodymium|Neodymium-based]] rare earth magnet has a field of about 1 tesla, with a magnetic energy density of 4.0×105 J/m3. A 10 gigatesla field, by contrast, has an energy density of 4.0×1025 J/m3, with an E/c2 mass density >104 times that of lead. The magnetic field of a magnetar would be lethal even at a distance of 1000 km, tearing tissues due to the [[Diamagnetism]] of water. A magnetar can erase credit cards from halfway to the moon. | ||
Remarkable things happen within a magnetic field of magnetar strength. | Remarkable things happen within a magnetic field of magnetar strength. | ||