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We continue the investigation of a CME-driven coronal dimming from December 14 2006 using unique high resolution imaging of the chromosphere and corona from the Hinode spacecraft. Over the course of the dimming event we observe the dynamic…

太阳与恒星天体物理 · 物理学 2009-01-20 Scott W. McIntosh , Joan Burkepile , Robert J. Leamon

Coronal mass ejections (CMEs) are often accompanied by coronal dimming evident in extreme ultraviolet (EUV) and soft X-ray observations. The locations of dimming are sometimes considered to map footpoints of the erupting flux rope. As the…

太阳与恒星天体物理 · 物理学 2016-07-06 J. X. Cheng , J. Qiu

We propose a new model for the initiation of a solar coronal mass ejection (CME). The model agrees with two properties of CMEs and eruptive flares that have proved to be very difficult to explain with previous models. a) Very low-lying…

天体物理学 · 物理学 2009-10-30 S. K. Antiochos , C. R. DeVore , J. A. Klimchuk

We carried out a multi-wavelength study of a CME and a medium-size 1B/C1.3 flare occurring on 12 May 1997. We present the investigation of magnetic-field variations in the NOAA Active Region 8038 which was observed on the Sun during 7--16…

太阳与恒星天体物理 · 物理学 2011-06-15 Rajmal Jain , Arun K. Awasthi , Babita Chandel , Lokesh Bharti , Y. Hanaoka , A. L. Kiplinger

We present the results of the observations of a coronal mass ejection (CME), which occurred on May 13, 2009. The most important feature of these observations is that the CME was observed from the very early stage (the solar surface) up to a…

太阳与恒星天体物理 · 物理学 2015-09-28 Anton Reva , Artem Ulyanov , Sergey Bogachev , Sergey Kuzin

We investigate the initiation and formation of Coronal Mass Ejections (CMEs) via detailed two-viewpoint analysis of low corona observations of a relatively fast CME acquired by the SECCHI instruments aboard the STEREO mission. The event…

太阳与恒星天体物理 · 物理学 2015-06-03 A. Vourlidas , P. Syntelis , K. Tsinganos

Using the multi-wavelength images and the photospheric magnetograms from the \emph{Solar Dynamics Observatory}, we study the flare which was associated by the only one coronal mass ejection (CME) in active region (AR) 12192. The eruption of…

太阳与恒星天体物理 · 物理学 2015-11-06 Xiaohong Li , Shuhong Yang , Huadong Chen , Ting Li , Jun Zhang

We present a case study of the 13 July 2004 solar event, in which disturbances caused by eruption of a filament from an active region embraced a quarter of the visible solar surface. Remarkable are absorption phenomena observed in the…

天体物理学 · 物理学 2008-11-07 V. V. Grechnev , A. M. Uralov , V. A. Slemzin , I. M. Chertok , I. V. Kuzmenko , K. Shibasaki

In a thorough study, we investigate the origin of a remarkable plasma and magnetic field configuration observed in situ on June 22, 2011 near L1, which appears to be a magnetic ejecta (ME) and a shock signature engulfed by a solar wind…

Combining STEREO, ACE and Hinode observations has presented an opportunity to follow a filament eruption and coronal mass ejection (CME) on the 17th of October 2007 from an active region (AR) inside a coronal hole (CH) into the heliosphere.…

Theoretically, CME kinematics are related to magnetic reconnection processes in the solar corona. However, the current quantitative understanding of this relationship is based on the analysis of only a handful of events. Here we report a…

太阳与恒星天体物理 · 物理学 2020-05-06 Chunming Zhu , Jiong Qiu , Paulett Liewer , Angelos Vourlidas , Michael Spiegel , Qiang Hu

In this paper, we analyze the full evolution, from a few days prior to the eruption to the initiation, and the final acceleration and propagation, of the CME that occurred on 2008 April 26 using the unprecedented high cadence and…

太阳与恒星天体物理 · 物理学 2015-05-18 X. Cheng , M. D. Ding , J. Zhang

Observational evidence is presented for the merging of a downward-propagating plasmoid with a looptop kernel during an occulted limb event on 2007 January 25. RHESSI lightcurves in the 9-18 keV energy range, as well as that of the 245 MHz…

太阳与恒星天体物理 · 物理学 2015-05-18 Ryan O. Milligan , R. T. James McAteer , Brian R. Dennis , C. Alex Young

Coronal mass ejections (CMEs) are the most spectacular eruptive phenomena in the solar atmosphere. It is generally accepted that CMEs are results of eruptions of magnetic flux ropes (MFRs). However, a heated debate is on whether MFRs…

太阳与恒星天体物理 · 物理学 2015-06-22 Hongqiang Song , Jie Zhang , Yao Chen , Xin Cheng

We present study of the complex event consisting of several solar wind transients detected by Advanced Composition Explorer (ACE) on 4 -- 7 August 2011, that caused a geomagnetic storm with Dst$=-$110 nT. The supposed coronal sources --…

空间物理 · 物理学 2017-05-12 D. Rodkin , F. Goryaev , P. Pagano , G. Gibb , V. Slemzin , Yu. Shugay , I. Veselovsky , D. H. Mackay

The magnetic breakout model explains a variety of solar eruptions, ranging from small-scale jets to large-scale coronal mass ejections (CMEs). Most of our previous studies are focused on jets and CMEs in single null-point topologies. Here,…

太阳与恒星天体物理 · 物理学 2025-09-16 Pankaj Kumar , Judith T. Karpen , Peter F. Wyper , David Lario , Spiro K. Antiochos , C. Richard DeVore

A high-speed halo-type coronal mass ejection (CME), associated with a GOES M4.6 soft X-ray flare in NOAA AR 0180 at S12W29 and an EIT wave and dimming, occurred on 9 November 2002. A complex radio event was observed during the same period.…

天体物理学 · 物理学 2008-01-21 N. J. Lehtinen , S. Pohjolainen , K. Huttunen-Heikinmaa , E. Valtonen , R. Vainio , A. E. Hillaris

The state of the space environment plays a significant role for forecasting of geomagnetic storms produced by disturbances of the solar wind (SW). Coronal mass ejections (CMEs) passing through the heliosphere often have a prolonged (up to…

空间物理 · 物理学 2022-04-27 Vladimir Slemzin , Farid Goryaev , Denis Rodkin

We investigate the occurrence of a CME-driven coronal dimming using unique high resolution spectral images of the corona from the Hinode spacecraft. Over the course of the dimming event we observe the dynamic increase of non-thermal line…

天体物理学 · 物理学 2011-02-11 Scott W. McIntosh

We report the simultaneous extreme ultraviolet observation of magnetic reconnection inflow and outflow in a flare on 2010 August 18 observed by the Atmospheric Imaging Assembly on board the {\it Solar Dynamics Observatory}. We found that…

太阳与恒星天体物理 · 物理学 2015-06-03 Shinsuke Takasao , Ayumi Asai , Hiroaki Isobe , Kazunari Shibata