2007

A New Model For The Loop-I (The North Polar Spur) Region

Wolleben, M.

Understand

The North Polar Spur (NPS) is the brightest filament of Loop I, a large circular feature in the radio continuum sky.

  • In this paper, a model consisting of two synchrotron emitting shells is presented that reproduces large-scale structures revealed by recent polarization surveys.
  • The polarized emission of the NPS is reproduced by one of these shells.
  • The other shell, which passes close to the Sun, gives rise to polarized emission towards the Galactic poles.

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