Emission of hydrogen lines by moving solar prominences.

Details Emission of hydrogen lines by moving solar prominences. Emission of hydrogen lines by moving solar prominences.

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...325..803g&link_type=abstract

Astronomy and Astrophysics, v.325, p.803-812

Astronomy and Astrophysics

Astrophysics

21

Radiative Transfer, Prominences, Radial Velocities

Scientific paper

We study the radiative transfer processes occurring in a plane-parallel slab standing vertically above the chromosphere and moving upward as a solid body. This structure simulates a prominence in the phase of eruption or a quiescent prominence where the plasma presents bulk velocities. We use partial redistribution for the description of the resonance scattering in the hydrogen Lα and Lβ lines. We compute the Lα, Lβ and Hα emergent line profiles of hydrogen for different velocities. We derive the variation of the emitted intensities as a function of the velocity for various temperatures and thicknesses. We discuss our results in view of the diagnostic of erupting prominences in Lyman lines that SOHO observations can provide.

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