JOP17 and JOP 33 are SOHO Joint Observing Programs in collaboration with Yohkoh/SXT and ground based observatories (GBO's), dedicated to observe dynamical events through the atmosphere. During runs of these programs we observed in restructuring active regions (ARs), surges, subflares, bright knots, but not large flares and jets. From these observations we have been able to derive some of the responses of the coronal and chromospheric plasma to the evolution of the photospheric magnetic field. Emerging flux in an AR led to the formation of Arch Filament Systems in the chromosphere, hot loops and knots in the transition region, and X-ray loops. Frequent surges have been observed in relation to parasitic or mixed polarities, but coronal jets have not yet been found. We discuss the possible mechanisms acting during the restructuring of the active regions (reconnection or "sea-serpent" geometries). © 2000 COSPAR. Published by Elsevier Science Ltd.
Documento: | Artículo |
Título: | Dynamics in restructuring active regions observed during SOHO/Yohkoh/GBO campaigns |
Autor: | Schmieder, B.; Deng, Y.; Mandrini, C.H.; Rudawy, P.; Nitta, N.; Mason, H.; Fletcher, L.; Martens, P.; Brynildsen, N. |
Filiación: | Observatoire de Paris, 92195, Meudon Cedex, France Institute of Oslo, N-0315 Blindern, Oslo 3, Norway Beijing Astronomical Observatory, Beijing, 100080, China Inst. Astronomia y Fis. del Espacio, IAFE, CC 67, Suc 28, 1428 Buenos Aires, Argentina Astron. Inst. of the Wroclaw Univ., 51-622 Wroclaw, Poland Lockheed, 3251 Hanover street, Palo Alto, CA 94304, United States Dept. Appl. Math. and Theor. Phys., Silver Street, Cambridge CB3 9EW, United Kingdom NASA/GSFC, Greenbelt, MD 20771, United States |
Año: | 2000 |
Volumen: | 25 |
Número: | 9 |
Página de inicio: | 1879 |
Página de fin: | 1882 |
DOI: | http://dx.doi.org/10.1016/S0273-1177(99)00600-6 |
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_v25_n9_p1879_Schmieder |