Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.
This results in a leftover stellar core with a mass around that of the sun, but one crammed into a diameter of between 12 and 20 miles . That's no wider than a standard city here on Earth. As a result, neutron stars are composed of matter so dense a teaspoon of one would weigh something like 10 million tons if brought over to Earth.
"It remains unclear how magnetars become magnetic in the first place," Julia Bodensteiner, a member of the discovery team and a research fellow at the European Southern Observatory , told Space.com."One possible idea is that the magnetar inherited the magnetic field from the collapsing core of its progenitor, implying that the star was magnetic beforehand. Until now, no magnetic massive stars close to the end of their evolution had been found.
The team thinks that as HD 45166 collapses under its own gravity, its magnetic field will strengthen by up to a billion times because its magnetic field lines will bunch together. Then, the massive helium star will become an incredibly compact stellar corpse, or core with a magnetic field of around 100 trillion gauss, the most powerful type of magnetar in the known universe.
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The powerful winds of super magnetic stars could destroy the possibility for life on their exoplanetsRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter sciencef1rst.
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