New Type of Star Gives Clues to Mysterious Origin of Magnetars Magnetars are the strongest magnets in the Universe. These super-dense dead stars with ultra-strong magnetic fields can be found all over our galaxy but astronomers don’t know exactly how they form. Now, using multiple telescopes around
Scientists have discovered a star, HD 45166, which is expected to evolve into a magnetar. This star introduces the new category of massive magnetic helium stars and offers clues to the origins of magnetars, which possess the Universe’s most powerful magnetic fields.Magnetars are the strongest magnets in the Universe. These super-dense dead stars with ultra-strong magnetic fields can be found all over our galaxy but astronomers don’t know exactly how they form.
Having studied similar helium-rich stars before, Shenar thought magnetic fields could crack the case. Indeed, magnetic fields are known to influence the behavior of stars and could explain why traditional models failed to describe HD 45166, which is located about 3000 light-years away in the constellation Monoceros.
HD 45166 is part of a binary system. In the background, we get a glimpse of HD 45166’s companion, a normal blue star that has been found to orbit at a far larger distance than previously reported. Shenar’s team had found that the star has an incredibly strong magnetic field, of 43,000 gauss, making HD 45166 the most magnetic massive star found to date.“The entire surface of the helium star has a magnetic field almost 100,000 times stronger than Earth’s,” explains co-author Pablo Marchant, an astronomer at KU Leuven’s Institute of Astronomy in Belgium [see edit].
Moreover, it provides clues to the origin of magnetars, compact dead stars laced with magnetic fields at least a billion times stronger than the one in HD 45166. The team’s calculations suggest that this star will end its life as a magnetar.
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