Non-LTE excitation of H_2 in magnetized molecular shocks

Details Non-LTE excitation of H_2 in magnetized molecular shocks Non-LTE excitation of H_2 in magnetized molecular shocks

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.280..550o&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 280, Issue 2, pp. 550-554.

Astronomy and Astrophysics

Astronomy

9

Mhd, Molecular Processes, Shock Waves, Ism: Clouds

Scientific paper

The observed H_2 line ratios in OMC-1 and IC 443 are not satisfactorily explained by conventional shock excitation models. We consider the microscopic collisional processes implicit in ambipolar diffusion models of magnetized C-shocks, and show that non-LTE level populations and emission-line ratios are an inevitable consequence of such models. This has important implications for the use of molecular hydrogen lines as diagnostics of shock models in molecular clouds.

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