X-rays reveal the magnetic field lighting up a stellar graveyard.
When massive stars die in dramatic supernovae, the beautiful stellar debris lingers in space for tens of thousands of years.
The core of the dead star becomes a pulsar — a rapidly rotating, highly magnetized pulsating star the size of a city, which spews out a wind of fast-moving, electrically charged particles. This pulsar wind carries a strong magnetic field, typically shaped like a doughnut, that generates a gas cloud called a pulsar wind nebula as it slams into the surrounding material
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