Neutral hydrogen in cometary comas.
The strong L alpha radiation observed recently in comets Tago-Sato-Kosaka and Bennett can be explained in terms of the resonant scattering of solar L alpha radiation on neutral hydrogen formed by the photodissociation of H2O which is vaporized from a nucleus having an ice core. A complete hydrodynam...
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1972
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| Online Access: | http://ntrs.nasa.gov/search.jsp?R=19730027940 |
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ftnasantrs:oai:casi.ntrs.nasa.gov:19730027940 |
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ftnasantrs:oai:casi.ntrs.nasa.gov:19730027940 2023-05-15T16:38:58+02:00 Neutral hydrogen in cometary comas. Mendis, D. A. Holzer, T. E. Axford, W. I. Unclassified, Unlimited, Publicly available Feb 1, 1972 http://ntrs.nasa.gov/search.jsp?R=19730027940 unknown http://ntrs.nasa.gov/search.jsp?R=19730027940 Accession ID: 73A12742 Copyright Other Sources 30 Astrophysics and Space Science; 15; Feb. 197 1972 ftnasantrs 2012-02-15T11:23:04Z The strong L alpha radiation observed recently in comets Tago-Sato-Kosaka and Bennett can be explained in terms of the resonant scattering of solar L alpha radiation on neutral hydrogen formed by the photodissociation 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. Other/Unknown Material ice core NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
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30 |
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30 Mendis, D. A. Holzer, T. E. Axford, W. I. Neutral hydrogen in cometary comas. |
| topic_facet |
30 |
| description |
The strong L alpha radiation observed recently in comets Tago-Sato-Kosaka and Bennett can be explained in terms of the resonant scattering of solar L alpha radiation on neutral hydrogen formed by the photodissociation 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. |
| format |
Other/Unknown Material |
| author |
Mendis, D. A. Holzer, T. E. Axford, W. I. |
| author_facet |
Mendis, D. A. Holzer, T. E. Axford, W. I. |
| author_sort |
Mendis, D. A. |
| title |
Neutral hydrogen in cometary comas. |
| title_short |
Neutral hydrogen in cometary comas. |
| title_full |
Neutral hydrogen in cometary comas. |
| title_fullStr |
Neutral hydrogen in cometary comas. |
| title_full_unstemmed |
Neutral hydrogen in cometary comas. |
| title_sort |
neutral hydrogen in cometary comas. |
| publishDate |
1972 |
| url |
http://ntrs.nasa.gov/search.jsp?R=19730027940 |
| op_coverage |
Unclassified, Unlimited, Publicly available |
| genre |
ice core |
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ice core |
| op_source |
Other Sources |
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http://ntrs.nasa.gov/search.jsp?R=19730027940 Accession ID: 73A12742 |
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Copyright |
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1766029326910750720 |