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Luoni, M.L.; Mandrini, C.H.; Cristiani, G.D.; Démoulin, P. "The magnetic field topology associated with two M flares" (2007) Advances in Space Research. 39(9):1382-1388
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Abstract:

On 27 October, 2003, two GOES M-class flares occurred in an interval of 3 h in active region NOAA 10486. The two flares were confined and their associated brightenings appeared at the same location, displaying a very similar shape both at the chromospheric and coronal levels. We focus on the analysis of magnetic field (SOHO/MDI), chromospheric (HASTA, Kanzelhöhe Solar Observatory, TRACE) and coronal (TRACE) observations. By combining our data analysis with a model of the coronal magnetic field, we compute the magnetic field topology associated with the two M flares. We find that both events can be explained in terms of a localized magnetic reconnection process occurring at a coronal magnetic null point. This null point is also present at the same location one day later, on 28 October, 2003. Magnetic energy release at this null point was proposed as the origin of a localized event that occurred independently with a large X17 flare on 28 October, 2003 [Mandrini, C.H., Démoulin, P., Schmieder, B., Deluca, E., Pariat, E., Uddin, W. Companion event and precursor of the X17 flare on 28 October, 2003. Solar Physics, 238, 293-312, 2006], at 11:01 UT. The three events, those on 27 October and the one on 28 October, are homologous. Our results show that coronal null points can be stable topological structures where energy release via magnetic reconnection can happen, as proposed by classical magnetic reconnection models. © 2007 COSPAR.

Registro:

Documento: Artículo
Título:The magnetic field topology associated with two M flares
Autor:Luoni, M.L.; Mandrini, C.H.; Cristiani, G.D.; Démoulin, P.
Filiación:Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC. 67 Suc. 28, 1428 Buenos Aires, Argentina
Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris, 5 place Jules Janssen, F-92195 Meudon Cedex, France
Palabras clave:Flares; Magnetic reconnection; MHD and plasmas; Solar Physics; Magnetic field effects; Magnetoplasma; Mathematical models; Observatories; Topology; Flares; Magnetic energy; Magnetic reconnection; Solar Physics; Solar system
Año:2007
Volumen:39
Número:9
Página de inicio:1382
Página de fin:1388
DOI: http://dx.doi.org/10.1016/j.asr.2007.02.005
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_v39_n9_p1382_Luoni

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Citas:

---------- APA ----------
Luoni, M.L., Mandrini, C.H., Cristiani, G.D. & Démoulin, P. (2007) . The magnetic field topology associated with two M flares. Advances in Space Research, 39(9), 1382-1388.
http://dx.doi.org/10.1016/j.asr.2007.02.005
---------- CHICAGO ----------
Luoni, M.L., Mandrini, C.H., Cristiani, G.D., Démoulin, P. "The magnetic field topology associated with two M flares" . Advances in Space Research 39, no. 9 (2007) : 1382-1388.
http://dx.doi.org/10.1016/j.asr.2007.02.005
---------- MLA ----------
Luoni, M.L., Mandrini, C.H., Cristiani, G.D., Démoulin, P. "The magnetic field topology associated with two M flares" . Advances in Space Research, vol. 39, no. 9, 2007, pp. 1382-1388.
http://dx.doi.org/10.1016/j.asr.2007.02.005
---------- VANCOUVER ----------
Luoni, M.L., Mandrini, C.H., Cristiani, G.D., Démoulin, P. The magnetic field topology associated with two M flares. Adv. Space Res. 2007;39(9):1382-1388.
http://dx.doi.org/10.1016/j.asr.2007.02.005