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Balmer alpha and Lyman beta in the hydrogen geocorona

1969; American Geophysical Union; Volume: 74; Issue: 14 Linguagem: Inglês

10.1029/ja074i014p03561

2156-2202

R. R. Meier,

Astronomical Observations and Instrumentation

The spherical Lyman-β radiative transfer problem is solved for several theoretical models of the hydrogen geocorona. Comparisons of the computed intensities with the experimental observations of Lyman β and Balmer α airglows show that the geocoronal Balmer α contribution is superimposed on a uniform background of about 4 R. The 4 R background is probably galactic (or extra-galactic) in origin. The column density of hydrogen required to account for the telluric Balmer α component is about 5 × 1013 atoms per cm² above 650 km for a 950°K exosphere.