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Abstract:

Magnetic clouds (MCs) are highly magnetized plasma structures that have a low proton temperature and a magnetic field vector that rotates when seen by a heliospheric observer. More than 25 years of observations of magnetic and plasma properties of MCs at 1 AU have provided significant knowledge of their magnetic structure. However, because in situ observations only give information along the trajectory of the spacecraft, their real 3D magnetic configuration remains still partially unknown. We generate a set of synthetic clouds, exploring the space of parameters that represents the possible orientations and minimum distances of the satellite trajectory to the cloud axis, p. The synthetic clouds have a local cylindrical symmetry and a linear force-free magnetic configuration. From the analysis of synthetic clouds, we quantify the errors introduced in the determination of the orientation/size (and, consequently, of the global magnetohydrodynamic quantities) by the Minimum Variance method when p is not zero. © 2007 COSPAR.

Registro:

Documento: Artículo
Título:Estimation of the bias of the Minimum Variance technique in the determination of magnetic clouds global quantities and orientation
Autor:Gulisano, A.M.; Dasso, S.; Mandrini, C.H.; Démoulin, P.
Filiación:Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas y Naturales, UBA, 1428 Buenos Aires, Argentina
Observatoire de Paris, Meudon, LESIA, UMR 8109 (CNRS), F-92195 Meudon Cedex, France
Palabras clave:Interplanetary space; MHD and plasmas; Solar wind; Magnetic fields; Magnetic structure; Solar wind; Spacecraft; Trajectories; Cylindrical symmetry; Interplanetary space; Magnetic clouds (MC); Magnetic configuration; Magnetohydrodynamics
Año:2007
Volumen:40
Número:12
Página de inicio:1881
Página de fin:1890
DOI: http://dx.doi.org/10.1016/j.asr.2007.09.001
Título revista:Advances in Space Research
Título revista abreviado:Adv. Space Res.
ISSN:02731177
CODEN:ASRSD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02731177_v40_n12_p1881_Gulisano

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Citas:

---------- APA ----------
Gulisano, A.M., Dasso, S., Mandrini, C.H. & Démoulin, P. (2007) . Estimation of the bias of the Minimum Variance technique in the determination of magnetic clouds global quantities and orientation. Advances in Space Research, 40(12), 1881-1890.
http://dx.doi.org/10.1016/j.asr.2007.09.001
---------- CHICAGO ----------
Gulisano, A.M., Dasso, S., Mandrini, C.H., Démoulin, P. "Estimation of the bias of the Minimum Variance technique in the determination of magnetic clouds global quantities and orientation" . Advances in Space Research 40, no. 12 (2007) : 1881-1890.
http://dx.doi.org/10.1016/j.asr.2007.09.001
---------- MLA ----------
Gulisano, A.M., Dasso, S., Mandrini, C.H., Démoulin, P. "Estimation of the bias of the Minimum Variance technique in the determination of magnetic clouds global quantities and orientation" . Advances in Space Research, vol. 40, no. 12, 2007, pp. 1881-1890.
http://dx.doi.org/10.1016/j.asr.2007.09.001
---------- VANCOUVER ----------
Gulisano, A.M., Dasso, S., Mandrini, C.H., Démoulin, P. Estimation of the bias of the Minimum Variance technique in the determination of magnetic clouds global quantities and orientation. Adv. Space Res. 2007;40(12):1881-1890.
http://dx.doi.org/10.1016/j.asr.2007.09.001