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van Driel-Gesztelyi, L.; Goff, C.P.; Démoulin, P.; Culhane, J.L.; Matthews, S.A.; Harra, L.K.; Mandrini, C.H.; Klein, K.-L.; Kurokawa, H. "Multi-scale reconnections in a complex CME" (2008) Advances in Space Research. 42(5):858-865
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Abstract:

A series of three flares of GOES class M, M and C, and a CME were observed on 20 January 2004 occurring in close succession in NOAA 10540. Types II, III, and N radio bursts were associated. We use the combined observations from TRACE, EIT, Hα images from Kwasan Observatory, MDI magnetograms, GOES, and radio observations from Culgoora and Wind/ WAVES to understand the complex development of this event. We reach three main conclusions. First, we link the first two impulsive flares to tether-cutting reconnections and the launch of the CME. This complex observation shows that impulsive quadrupolar flares can be eruptive. Second, we relate the last of the flares, an LDE, to the relaxation phase following forced reconnections between the erupting flux rope and neighbouring magnetic field lines, when reconnection reverses and restores some of the pre-eruption magnetic connectivities. Finally, we show that reconnection with the magnetic structure of a previous CME launched about 8 h earlier injects electrons into open field lines having a local dip and apex (located at about six solar radii height). This is observed as an N-burst at decametre radio wavelengths. The dipped shape of these field lines is due to large-scale magnetic reconnection between expanding magnetic loops and open field lines of a neighbouring streamer. This particular situation explains why this is the first N-burst ever observed at long radio wavelengths. © 2007 COSPAR.

Registro:

Documento: Artículo
Título:Multi-scale reconnections in a complex CME
Autor:van Driel-Gesztelyi, L.; Goff, C.P.; Démoulin, P.; Culhane, J.L.; Matthews, S.A.; Harra, L.K.; Mandrini, C.H.; Klein, K.-L.; Kurokawa, H.
Filiación:Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, United Kingdom
Observatoire de Paris, LESIA, UMR 8109 (CNRS), 92195 Meudon, Cedex Principal, France
Konkoly Observatory, the Hungarian Academy of Sciences, Budapest, Hungary
Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC. 67 Suc. 28, 1428 Buenos Aires, Argentina
Hida and Kwasan Observatories, Kyoto University, Yamashina, Kyoto, 607, Japan
Palabras clave:Magnetic reconnection; Radio burst; Sun: coronal mass ejection; Sun: EUV; Sun: flares; Sun: magnetic fields; Sun: radio; Astrophysics; Crystallography; Magnetic fields; Magnetic materials; Magnetic structure; Field lines; Flux ropes; Magnetic (CE); Magnetic loops; Magnetic reconnection (MR); Magnetic-field lines; MDI magnetograms; Multi scaling; Open field lines; radio bursts; radio observations; Radio wavelengths; Solar radius; Magnetism
Año:2008
Volumen:42
Número:5
Página de inicio:858
Página de fin:865
DOI: http://dx.doi.org/10.1016/j.asr.2007.04.065
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_v42_n5_p858_vanDrielGesztelyi

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Citas:

---------- APA ----------
van Driel-Gesztelyi, L., Goff, C.P., Démoulin, P., Culhane, J.L., Matthews, S.A., Harra, L.K., Mandrini, C.H.,..., Kurokawa, H. (2008) . Multi-scale reconnections in a complex CME. Advances in Space Research, 42(5), 858-865.
http://dx.doi.org/10.1016/j.asr.2007.04.065
---------- CHICAGO ----------
van Driel-Gesztelyi, L., Goff, C.P., Démoulin, P., Culhane, J.L., Matthews, S.A., Harra, L.K., et al. "Multi-scale reconnections in a complex CME" . Advances in Space Research 42, no. 5 (2008) : 858-865.
http://dx.doi.org/10.1016/j.asr.2007.04.065
---------- MLA ----------
van Driel-Gesztelyi, L., Goff, C.P., Démoulin, P., Culhane, J.L., Matthews, S.A., Harra, L.K., et al. "Multi-scale reconnections in a complex CME" . Advances in Space Research, vol. 42, no. 5, 2008, pp. 858-865.
http://dx.doi.org/10.1016/j.asr.2007.04.065
---------- VANCOUVER ----------
van Driel-Gesztelyi, L., Goff, C.P., Démoulin, P., Culhane, J.L., Matthews, S.A., Harra, L.K., et al. Multi-scale reconnections in a complex CME. Adv. Space Res. 2008;42(5):858-865.
http://dx.doi.org/10.1016/j.asr.2007.04.065