Neutral Hydrogen in Cometary Comas

Details Neutral Hydrogen in Cometary Comas Neutral Hydrogen in Cometary Comas

Feb 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..15..313m&link_type=abstract

Astrophysics and Space Science, Volume 15, Issue 2, pp.313-325

Astronomy and Astrophysics

Astrophysics

38

Scientific paper

The strong Lα radiation observed recently in comets Tago-Sato-Kosaka and Bennett can be explained in terms of the resonant scattering of solar Lα radiation on neutral hydrogen formed by the photo-dissociation of H2O which is vaporized from a nucleus having an ice core. A complete hydrodynamic description of an atmosphere composed of H2O and its daughter products OH, H and O coupled through frictional interaction as well as production and loss processes is given. Numerical results are computed in a typical case, and it is found that a temperature of about 3000 K for the cometary atmosphere provides the best fit with observation.

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