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Mandrini, C.H.; Pohjolainen, S.; Dasso, S.; Green, L.M.; Démoulin, P.; Van Driel-Gesztelyi, L.; Foley, C.; Copperwheat, C. "The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid" (2005) Advances in Space Research. 36(8):1579-1586
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Abstract:

We provide evidence for the smallest sigmoid eruption - CME - interplanetary magnetic cloud event ever observed by combining multi-wavelength remote sensing and in situ observations, as well as computing the coronal and interplanetary magnetic fields. The tiny bipole had 100 times less flux than an average active region (AR). It had a sigmoidal structure in the corona and we detected a very high level of twist in its magnetic field. On 11 May 1998, at about 8 UT, the sigmoid underwent eruption evidenced by expanding elongated EUV loops, dimmings and formation of a cusp. The Wind spacecraft, 4.5 days later, detected one of the smallest magnetic clouds (MC) ever identified (100 times less magnetic flux than an average MC). The link between the EUV bright point eruption and the interplanetary MC is supported by several pieces of evidence: timing, same coronal loop and MC orientation relative to the ecliptic, same magnetic field direction and magnetic helicity sign in the coronal loops and in the MC, comparable magnetic flux measured in the dimming regions and in the interplanetary MC and, most importantly, the pre- to post-event change of magnetic helicity in the solar corona is found to be comparable to the helicity content of the cloud. © 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid
Autor:Mandrini, C.H.; Pohjolainen, S.; Dasso, S.; Green, L.M.; Démoulin, P.; Van Driel-Gesztelyi, L.; Foley, C.; Copperwheat, C.
Filiación:Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina
Tuorla Observatory, VISPA, University of Turku, FIN-21500 Piikkiö, Finland
School of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff CF24 3YB, United Kingdom
Observatoire de Paris, Meudon, LESIA, UMR 8109 (CNRS), F-92195 Meudon, Cedex, France
Mullard Space Science Laboratory, University College London, Dorking, Surrey RH5 6NT, United Kingdom
Konkoly Observatory, Budapest, Pf. 67, H-1525, Hungary
Carrera Del Investigator Cientifico, CONICET, Argentina
Palabras clave:Bursts and related phenomena; Flares; Interplanetary space; MHD and plasmas; Solar physics; Clouds; Interplanetary spacecraft; Magnetic flux; Remote sensing; Solar energy; Bursts and related phenomena; Flares; Interplanetary space; MHD and plasmas; Solar physics; Space research
Año:2005
Volumen:36
Número:8
Página de inicio:1579
Página de fin:1586
DOI: http://dx.doi.org/10.1016/j.asr.2005.02.003
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_v36_n8_p1579_Mandrini

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Citas:

---------- APA ----------
Mandrini, C.H., Pohjolainen, S., Dasso, S., Green, L.M., Démoulin, P., Van Driel-Gesztelyi, L., Foley, C.,..., Copperwheat, C. (2005) . The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid. Advances in Space Research, 36(8), 1579-1586.
http://dx.doi.org/10.1016/j.asr.2005.02.003
---------- CHICAGO ----------
Mandrini, C.H., Pohjolainen, S., Dasso, S., Green, L.M., Démoulin, P., Van Driel-Gesztelyi, L., et al. "The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid" . Advances in Space Research 36, no. 8 (2005) : 1579-1586.
http://dx.doi.org/10.1016/j.asr.2005.02.003
---------- MLA ----------
Mandrini, C.H., Pohjolainen, S., Dasso, S., Green, L.M., Démoulin, P., Van Driel-Gesztelyi, L., et al. "The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid" . Advances in Space Research, vol. 36, no. 8, 2005, pp. 1579-1586.
http://dx.doi.org/10.1016/j.asr.2005.02.003
---------- VANCOUVER ----------
Mandrini, C.H., Pohjolainen, S., Dasso, S., Green, L.M., Démoulin, P., Van Driel-Gesztelyi, L., et al. The smallest source region of an interplanetary magnetic cloud: A mini-sigmoid. Adv. Space Res. 2005;36(8):1579-1586.
http://dx.doi.org/10.1016/j.asr.2005.02.003