Hydrogen Photoionization Cross Sections for Strong-Field Magnetic White Dwarfs

Details Hydrogen Photoionization Cross Sections for Strong-Field Magnetic White Dwarfs Hydrogen Photoionization Cross Sections for Strong-Field Magnetic White Dwarfs

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...667.1119z&link_type=abstract

The Astrophysical Journal, Volume 667, Issue 2, pp. 1119-1125.

Astronomy and Astrophysics

Astronomy

1

Atomic Processes, Stars: Magnetic Fields, Stars: White Dwarfs

Scientific paper

A recently developed computational scheme, based on the complex-rotation method combined with a mixed Slater-Landau basis expansion, has been applied to calculations of photoionization from atomic hydrogen ground and excited states in a strong magnetic field typical of magnetic white dwarf stars. Photoionization cross sections are presented for the twelve states, 1s0, 2s0, 2p0, 2p-1, 3s'0, 3p0, 3p-1, 3d'0, 3d-1, 3d-2, 4f-2, and 4f-3, with magnetic field strengths from 23.5 to 2350 MG. In most cases, good agreement has been found between the current results and the limited theoretical data in the literature. New transitions and additional field strengths are given here, which will be applicable to modeling the flux and polarization spectra of magnetic white dwarfs with hydrogen-dominated atmospheres.

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