The shadow of comet Hale-Bopp in Lyman-alpha: An absolute measurement of H production rate with SOHO/SWAN
For a few months around perihelion, the central part of the Hale-Bopp hydrogen cloud has been optically thick to the solar Ly alpha radiation, and has significantly reduced the solar flux available for the resonance glow of interstellar hydrogen beyond the comet. This shadowing effect on the interst...
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| Published in: | Earth, moon, and planets Vol. 90; no. 1-4; pp. 67 - 76 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-03-2002
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| Online Access: | Get full text |
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| Summary: | For a few months around perihelion, the central part of the Hale-Bopp hydrogen cloud has been optically thick to the solar Ly alpha radiation, and has significantly reduced the solar flux available for the resonance glow of interstellar hydrogen beyond the comet. This shadowing effect on the interstellar gas is the first ever observed comet shadow. It is modeled and compared with SWAN observations. Shadow modelling will help to constrain the comet water production and radiative transfer effects in the interstellar ionisation cavity. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-2 ObjectType-Feature-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Conference-3 |
| ISSN: | 0167-9295 |
| DOI: | 10.1023/A:1021512317744 |