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Astronomers observe the first radiation belt seen outside of our solar system: High-resolution imaging of radio emissions from an ultracool dwarf show a double-lobed structure like the radiation belts of Jupiter

Astronomers have described the first radiation belt observed outside our solar system, using a coordinated array of 39 radio dishes from Hawaii to Germany to obtain high-resolution images. The images of persistent, intense radio emissions from an ultracool dwarf reveal the presence of a cloud of high-energy electrons trapped in the object s powerful magnetic field, forming a double-lobed structure analogous to radio images of Jupiter s radiation belts. ....

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