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Third pole theory for nebula.

Scientists are baffled by emissions of radio energy from the Crab Nebula, the remains of an exploded star 6,300 light years from Earth.

They think the nebula, first recorded by Chinese astronomers in 1054, may be the first cosmological object with a third magnetic pole.

The Crab Nebula, in the constellation Taurus, is a pulsar - a source of powerful radiation shooting in pulses from a spinning object at its centre, like a lighthouse beam. The radiation emissions from the north and south poles of a pulsar should be identical. But observations from the Arecibo radio telescope in Puerto Rico show those from the Crab Nebula are not.
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Publication:The Birmingham Post (England)
Date:Jan 9, 2007
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