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| Titel |
Polarization of Sodium Na emission lines in Mercury's exosphere |
| VerfasserIn |
Arturo López Ariste, Bernard Gelly, Francois Leblanc, Claude Le Men, Cyril Simon Wedlund |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250058095
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| Zusammenfassung |
| Mercury’s exosphere scatters solar light. Sodium atoms Na are particularly effective
scatterers and the resulting D1 and D2 emission lines around 589 nm have often been used to
map the exosphere and its dynamics. As any scattering process, the emitted light is linearly
polarized. Following observational campaigns in 2010 with the solar telescope THEMIS
(Tenerife), this polarization was measured as well as its variations along the orbit. Currently,
the sensitivity of this signal to the magnetic field of Mercury through the Hanle effect is
being explored, which could give new insight on the planet’s magnetic environment. |
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