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Space

Mysterious gamma rays in Crab nebula traced to pulsar winds

By Adam Mann

27 November 2017

crab nebula

Baffling nebula

ESO

Waves of charged particles slamming into gas and dust may be responsible for unexpected super-bright flashes in the Crab nebula.

The Crab, located about 6500 light years away in the constellation Taurus, is the remains of a star that exploded as a supernova in 1054 AD. At its heart is a compact neutron star – an ultra-dense object the size of a city but with several times the mass of the sun.

That star is a pulsar, meaning its magnetic field generates intense beams that, as the star spins on its axis, shine in a similar way…

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