Our entire solar system and some nearby stars may be surrounded by a vast magnetic tunnel, according to a Canadian scientist who has set out a unified theory to explain two existing features in space.
In a radio map of the night sky, the North Polar Spur and the Fan Region are two bright, tendril-like gas features in our galaxy, which emit a large amount of radio waves in many frequencies. Although they’re on opposite sides of the sky, new research is suggesting that they are actually connected.
“That’s the equivalent distance of travelling between Toronto and Vancouver two trillion times,” West said. Under this theory, both are part of a tunnel that has its own magnetic field and is made up of charged particles, encircling Earth around 350 light-years away.points out that the North Polar Spur and the Fan Region have similar features, such as “high fractional polarization and coherent magnetic fields” as well as cosmic ray electrons.
She said in the release that her team was inspired by a paper from 1965, when data was much more limited, which “speculated that these polarized radio signals could arise from our view of the Local Arm of the Galaxy, from inside it.” An important step was thinking about the orientation of the sky from a different point of view, West said. While astronomers usually think of the sky in one orientation, having a “Galaxy up” and a “Galactic centre,” that centre can be switched to draw a new map that provides new perspectives, much like how a map of the Earth that centres the Pacific Ocean instead of the Atlantic would look very different.
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