Sunday, June 8, 2014

“With a Little Help From Their Friends,” Magnetars Form in Binary Systems, New Study Suggests

“With a Little Help From Their Friends,” Magnetars Form in Binary Systems, New Study Suggests:

This artist’s impression shows the magnetar in the very rich and young star cluster Westerlund 1. This remarkable cluster contains hundreds of very massive stars, some shining with a brilliance of almost one million suns. European astronomers have for the first time demonstrated that this magnetar — an unusual type of neutron star with an extremely strong magnetic field — probably was formed as part of a binary star system. The discovery of the magnetar’s former companion elsewhere in the cluster helps solve the mystery of how a star that started off so massive could become a magnetar, rather than collapse into a black hole. Credit: ESO/L. Calçada

This artist’s conception shows the magnetar in the very rich and young star cluster Westerlund 1. Image Credit: ESO / L. Calçada
Astronomy is a discipline of extremes. We’re constantly searching for the most powerful, the most explosive, and the most energetic objects in the Universe. Magnetars — extremely dense and highly magnetic neutron stars — are no exception to the rule. They’re the strongest known magnets in the Universe, millions of times more powerful than the strongest magnets on Earth.

But their origin has eluded astronomers for 35 years. Now, an international team of astronomers think they’ve found the partner star of a magnetar for the first time, an observation that suggests magnetars form in binary star systems.

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