caa a22 4500 445346221 CHVBK 20180317142829.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s11207-011-9762-1 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9762-1 Quadrupolar Dimmings During a Partial Halo Coronal Mass Ejection Event [Elektronische Daten] [J. Yang, Y. Jiang, R. Zheng, J. Hong, Y. Bi, L. Yang] We present detailed observations of the formations of four distinct coronal dimmings during a flare of 17 September 2002, which was followed by an eruption of a huge coronal loop system, and then an over-and-out partial halo coronal mass ejection (CME), with the same direction as the loop system eruption but laterally far offset from the flare site. Among the four dimmings, two compact ones were symmetrically located in the opposite polarity regions immediately adjacent to the highly sheared magnetic polarity inversion line in the flare region, and hence were probably composed of bipolar double dimmings due to a flux-rope eruption and represented its evacuated footpoints. However, another nearby compact dimming and a remote diffuse one were formed in the opposite polarity footpoint regions of the eruptive loop system, and thus probably consisted of a pair of dimmings magnetically linked by the erupting loop system and also indicated its evacuated footpoints. The loop system might have played a role in guiding the erupting flare field and producing the over-and-out CME, but its eruption might simply have been pushed out by the erupting flare field, because there was no reconnection signature between them. From comparison with a derived potential-field source-surface (PFSS) magnetic configuration, our observations consistently suggest that the dimmings were formed in pairs and originated from the eruptions of the two different magnetic systems. We thus define them as "quadrupolar dimmings.” Springer Science+Business Media B.V., 2011 Corona, activity nationallicence Coronal mass ejections, low coronal signatures nationallicence Magnetic fields, corona nationallicence Prominences, activity nationallicence Yang J. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Jiang Y. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Zheng R. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Hong J. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Bi Y. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Yang L. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut Solar Physics Springer Netherlands 270/2(2011-06-01), 551-559 0038-0938 270:2<551 2011 270 11207 https://doi.org/10.1007/s11207-011-9762-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9762-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang J. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 700 1- Jiang Y. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 700 1- Zheng R. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 700 1- Hong J. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 700 1- Bi Y. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 700 1- Yang L. National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 270/2(2011-06-01), 551-559 0038-0938 270:2<551 2011 270 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer