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The Effects of Magnetic Accretion on the Spatial Extent of White Dwarf Pollution

  • Authors: Dang Pham, Aster G. Taylor, Tim Cunningham

Dang Pham et al 2026 The Astrophysical Journal 1008 .

  • Provider: AAS Journals

Caption: Figure 4.

The accretion points on a white dwarf, with an angle β = π/6 between the magnetic pole and the spin axis, an inclination I = π/4 between the accretion disk and the spin axis, an octopole–dipole ratio Γ = 1, and a disk truncation radius at RX = 2 R. The spin axis of the white dwarf is straight up, while the blue and red points are the poles of the magnetic field. The blue and red lines show where accreted metals will strike the atmosphere. For these parameters, the red line and point are on the far side of the white dwarf and are shown as dashed lines. The black line shows the magnetic field equator. Finally, the black point shows the direction from which the material is accreted. As the white dwarf rotates, the points where the accretion strikes the white dwarf’s surface will sweep out the blue and red curves.

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