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Polarisation in the Auroral Red Line During Coordinated Eiscat Svalbard Radar/Optical Experiments : Volume 29, Issue 6 (22/06/2011)

By Barthélémy, M.

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Book Id: WPLBN0003985406
Format Type: PDF Article :
File Size: Pages 12
Reproduction Date: 2015

Title: Polarisation in the Auroral Red Line During Coordinated Eiscat Svalbard Radar/Optical Experiments : Volume 29, Issue 6 (22/06/2011)  
Author: Barthélémy, M.
Volume: Vol. 29, Issue 6
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Lilensten, J., Lorentzen, D., Pitout, F., Wedlund, C. S., Ménager, H., Rothkael, H.,...Moen, J. (2011). Polarisation in the Auroral Red Line During Coordinated Eiscat Svalbard Radar/Optical Experiments : Volume 29, Issue 6 (22/06/2011). Retrieved from

Description: IPAG, UMR5274, UJF-CNRS, BP 53, 38041 Saint-Martin d'Hères cedex 9, France. The polarisation of the atomic oxygen red line in the Earth's thermosphere is observed in different configurations with respect to the magnetic field line at high latitude during several coordinated Incoherent Scatter radar/optical experiment campaigns. When pointing northward with a line-of-sight nearly perpendicular to the magnetic field, we show that, as expected, the polarisation is due to precipitated electrons with characteristic energies of a few hundreds of electron Volts. When pointing toward the zenith or southward with a line-of-sight more parallel to the magnetic field, we show that the polarisation practically disappears. This confirms experimentally the predictions deduced from the recent discovery of the red line polarisation. We show that the polarisation direction is parallel to the magnetic field line during geomagnetic activity intensification and that these results are in agreement with theoretical work.

Polarisation in the auroral red line during coordinated EISCAT Svalbard Radar/optical experiments

Barthélémy, M., Lystrup, M., Menager, H., Miller, S., and Lilensten, J.: Are the jovian $H^+_3$ auroral emission polarized?, Astr. and Astrophy., accepted , 2011.; Bommier, V., Sahal-Bréchot, S., Dubau, J., and Cornille, M.: The theoretical impact polarization of the O I 6300 Å red line of Earth aurorae, Ann. Geophys., 29, 71–79, doi:10.5194/angeo-29-71-2011, 2011.; Bucholtz, A.: Rayleigh-scattering calculations for the terrestrial atmosphere, Appl. Optics, 34, 2765– , 1995.; Chamberlain, J. W.: On the polarization of the oxygen red line in aurorae, \planss, 2, 73–75, doi:10.1016/0032-0633(59)90063-7, 1959.; Duncan, R. A.: Polarization of the red oxygen auroral line, \planss, 1, 112, doi:10.1016/0032-0633(59)90006-6, 1959.; Lilensten, J., Simon, C., {Barth{é}lemy}, M., Moen, J., Thissen, R., and Lorentzen, D. A.: Considering the polarization of the oxygen thermospheric red line for space weather studies, Space Weather, 4, , doi:10.1029/2006SW000228, 2006.; Lilensten, J., Moen, J., Barth{é}lemy, M., Thissen, R., Simon, C., Lorentzen, D. A., Dutuit, O., Amblard, P. O., and Sigernes, F.: Polarization in aurorae: A new dimension for space environments studies, \grl, 35, L08804, doi:10.1029/2007GL033006, 2008.; Witasse, O., Lilensten, J., Lathuill{è}re, C., and Blelly, P.: Modeling the OI 630.0 and 557.7 nm thermospheric dayglow during EISCAT-WINDII coordinated measurements, \jgr, 104, 24639–24656, doi:10.1029/1999JA900260, 1999.


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