Mathematically, this phenomenon can be represented by setting helicity equal to the integral of the 
Mathematically, this phenomenon can be represented by setting helicity equal to the integral of the net flux through the North Pole to a co-latitude of sixty degrees. In 1991, Smith and Bieber provided the calculations that would further describe this quantity correctly, and planes called "neutral current sheets" divvy up the regions of this phenomenon. The Ulysses mission confirmed the distribution that underlies this object, even when accounting for the sixty degree deviation occurring around a certain body's equator. This shape's interaction with other bodies was found to affect its consistency by Pioneer 11, and this characteristic is present from one astronomical unit to eight and a half astronomical units due to prominences applying a force similar to torque on magnetic particles. For 10 points, name this shape that describes the sun's magnetic field due to the solar wind twisting it, named for an American astrophysicist.
Mathematically, this phenomenon can be represented by setting helicity equal to the integral of the net flux through the North Pole to a co-latitude of sixty degrees.
Parker spiral