The white dwarf pulsar spins 300 times faster than Earth and could help reveal how these rare objects generate powerful magnetic fields.
crammed into a width around that of Earth. It is spinning around 300 times faster than our planet. Just a teaspoon of material from this white dwarf would weigh 15 tonnes, about four times as heavy as a hippo. White dwarfs lose heat as they age, and the relatively cool temperature of this J1912−4410 indicates that it has an advanced age.The team discovered J1912–4410 by searching data delivered by various astronomical surveys for systems with characteristics similar to AR Sco.
"There were other predictions made by the dynamo model, which were confirmed by the discovery of J1912−4410. Due to their old age, the white dwarfs in the pulsar system should be cool. Their companions should be close enough that the gravitational pull of the white dwarf was in the past strong enough to capture mass from the companion, and this causes them to be fast spinning."
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