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Abstract:

We present the first quantitative three-dimensional (3D) tomographic reconstructions of electron density from coronagraph measurements of the K-corona's total brightness (B) made by LASCO-C2 on SOHO. This is possible because new calibrations of the LASCO-C2 images in both polarized brightness (pB) and B have now been made for the entire mission. The B and pB reconstructions are compared, and the differences are explained in terms of line of sight weighting functions in Thomson scattering. We conclude that the LASCO-C2 B archive, which is vastly larger than the pB archive, will be a very valuable resource for determining the 3D electron density throughout the SOHO mission which started taking data in 1996. © 2010 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Three-dimensional electron density from tomographic analysis of LASCO-C2 images of the K-corona total brightness
Autor:Frazin, R.A.; Lamy, P.; Llebaria, A.; Vásquez, A.M.
Filiación:Dept. of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109, United States
Laboratoire d'Astrophysique de Marseille, Université de Provence - CNRS, 38 rue Frédéric Joliot-Curie, 13388 Marseille cedex 13, France
Instituto de Astronomía y Física del Espacio, CONICET - University of Buenos Aires, CC 67 Suc 28, Ciudad de Buenos Aires, Argentina
Palabras clave:Electron density; Solar corona; Thomson scattering; Tomography
Año:2010
Volumen:265
Número:1
Página de inicio:19
Página de fin:30
DOI: http://dx.doi.org/10.1007/s11207-010-9557-9
Título revista:Solar Physics
Título revista abreviado:Sol. Phys.
ISSN:00380938
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v265_n1_p19_Frazin

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Citas:

---------- APA ----------
Frazin, R.A., Lamy, P., Llebaria, A. & Vásquez, A.M. (2010) . Three-dimensional electron density from tomographic analysis of LASCO-C2 images of the K-corona total brightness. Solar Physics, 265(1), 19-30.
http://dx.doi.org/10.1007/s11207-010-9557-9
---------- CHICAGO ----------
Frazin, R.A., Lamy, P., Llebaria, A., Vásquez, A.M. "Three-dimensional electron density from tomographic analysis of LASCO-C2 images of the K-corona total brightness" . Solar Physics 265, no. 1 (2010) : 19-30.
http://dx.doi.org/10.1007/s11207-010-9557-9
---------- MLA ----------
Frazin, R.A., Lamy, P., Llebaria, A., Vásquez, A.M. "Three-dimensional electron density from tomographic analysis of LASCO-C2 images of the K-corona total brightness" . Solar Physics, vol. 265, no. 1, 2010, pp. 19-30.
http://dx.doi.org/10.1007/s11207-010-9557-9
---------- VANCOUVER ----------
Frazin, R.A., Lamy, P., Llebaria, A., Vásquez, A.M. Three-dimensional electron density from tomographic analysis of LASCO-C2 images of the K-corona total brightness. Sol. Phys. 2010;265(1):19-30.
http://dx.doi.org/10.1007/s11207-010-9557-9