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Related papers: The kinematics of coronal mass ejections using mul…

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Coronal mass ejections (CMEs) stand as intense eruptions of magnetized plasma from the Sun, playing a pivotal role in driving significant changes of the heliospheric environment. Deducing the properties of CMEs from their progenitors in…

Solar and Stellar Astrophysics · Physics 2024-07-15 J. H. Guo , L. Linan , S. Poedts , Y. Guo , B. Schmieder , A. Lani , Y. W. Ni , M. Brchnelova , B. Perri , T. Baratashvili , S. T. Li , P. F. Chen

Measurements of coronal mass ejections (CMEs) by multiple spacecraft at small radial separations but larger longitudinal separations is one of the ways to learn about the three-dimensional structure of CMEs. Here, we take advantage of the…

Coronal mass ejections (CMEs) often exhibit a three-part structure consisting of a bright inner core, an outer leading edge, and an intervening dark cavity. While the core has traditionally been attributed to prominence material, an…

Solar and Stellar Astrophysics · Physics 2026-01-12 Sunit Sundar Pradhan , Jayant Joshi , Tanmoy Samanta

Methods: Stealth CMEs represent a particular class of solar eruptions that are clearly distinguished in coronagraph observations, but they don't have a clear source signature. A particular type of stealth CMEs occurs in the trailing current…

Solar and Stellar Astrophysics · Physics 2020-05-20 D. -C. Talpeanu , E. Chané , S. Poedts , E. D'Huys , M. Mierla , I. Roussev , S. Hosteaux

We discuss features of coronal mass ejections (CMEs) that are specific to heliospheric observations at large elongation angles. Our analysis is focused on a series of two eruptions that occurred on 2007 January 24-25, which were tracked by…

Space Physics · Physics 2009-05-18 N. Lugaz , A. Vourlidas , I. I. Roussev , C. Jacobs , W. B. Manchester , O. Cohen

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…

Solar and Stellar Astrophysics · Physics 2015-06-03 A. Vourlidas , P. Syntelis , K. Tsinganos

In this paper, we analyze 91 coronal mass ejection (CME) events studied by Manoharan et al. (2004) and Gopalswamy and Xie (2008). These earth-directed CMEs are large (width $>$160$^\circ$) and cover a wide range of speeds ($\sim$120--2400…

Solar and Stellar Astrophysics · Physics 2015-05-20 P. K. Manoharan , A. Mujiber Rahman

The statistical study of the Coronal Mass Ejections (CMEs) is a hot topic in solar physics. To further reveal the temporal and spatial behaviors of the CMEs at different latitudes and heights, we analyzed the correlation and phase…

Solar and Stellar Astrophysics · Physics 2022-06-22 Jiaqi Lin , Feng Wang , Linhua Deng , Hui Deng , Ying Mei , Yangfan Xie

Context. Coronal mass ejections (CMEs) are large eruptions of magnetised plasma from the Sun that are often accompanied by solar radio bursts produced by accelerated electrons. Aims. A powerful source for accelerating electron beams are…

Solar and Stellar Astrophysics · Physics 2020-10-14 D. E. Morosan , E. Palmerio , J. E. Räsänen , E. K. J. Kilpua , J. Magdalenić , B. J. Lynch , A. Kumari , J. Pomoell , M. Palmroth

Using data from the Heliospheric Imagers (HIs) onboard STEREO, it is possible to derive the direction of propagation of coronal mass ejections (CMEs) in addition to their speed with a variety of methods. For CMEs observed by both STEREO…

Solar and Stellar Astrophysics · Physics 2011-06-28 N. Lugaz

We investigate the source eruption, propagation and expansion characteristics, and heliospheric impacts of the 2020 November 29 coronal mass ejection (CME) and associated shock, using remote sensing and in situ observations from multiple…

Solar and Stellar Astrophysics · Physics 2022-10-05 Chong Chen , Ying D. Liu , Bei Zhu

We investigated some properties of coronal mass ejections (CMEs), such as speed, acceleration, polar angle, angular width, and mass, using data acquired by the Large Angle Spectrometric Coronagraph (LASCO) onboard the Solar and Heliospheric…

Solar and Stellar Astrophysics · Physics 2016-12-30 A. Compagnino , P. Romano , F. Zuccarello

Low frequency dynamic spectra of radio bursts from nearby stars offer the best chance to directly detect the stellar signature of transient mass loss on low mass stars. Crosley et al. (2016) proposes a multi-wavelength methodology to…

Solar and Stellar Astrophysics · Physics 2017-08-23 M. K. Crosley , R. A. Osten , C. Norman

The trajectories of coronal mass ejections (CMEs) are often seen to substantially deviate from a purely radial propagation direction. Such deviations occur predominantly in the corona and have been attributed to "channeling" or deflection…

We investigate the coronal and interplanetary evolution of a coronal mass ejection (CME) launched on 2010 September 4 from a source region linking two active regions (ARs) 11101 and 11103, using extreme ultraviolet imaging, magnetogram,…

Solar and Stellar Astrophysics · Physics 2017-05-24 Huidong Hu , Ying D. Liu , Rui Wang , Xiaowei Zhao , Bei Zhu , Zhongwei Yang

Halo coronal mass ejections (CMEs) were found to be significantly faster than normal CMEs, which was a long-standing puzzle. In order to solve the puzzle, we first investigate the observed properties of 31 limb CMEs that display clearly…

Solar and Stellar Astrophysics · Physics 2015-05-18 Q. M. Zhang , Y. Guo , P. F. Chen , M. D. Ding , C. Fang

Coronal mass ejections (CMEs) are violent ejections of magnetized plasma from the Sun, which can trigger geomagnetic storms, endanger satellite operations and destroy electrical infrastructures on the Earth. After systematically searching…

Solar and Stellar Astrophysics · Physics 2023-08-09 Hong-peng Lu , Hui Tian , He-chao Chen , Yu Xu , Zhen-yong Hou , Xian-yong Bai , Guang-yu Tan , Zi-hao Yang , Jie Ren

The Time-of-Arrival (ToA) of coronal mass ejections (CME) at Earth is a key parameter due to the space weather phenomena associated with the CME arrival, such as intense geomagnetic storms. Despite the incremental use of new instrumentation…

We present a novel three-dimensional (3D) model of coronal mass ejections (CMEs) that unifies all key evolutionary aspects of CMEs and encapsulates their 3D magnetic field configuration. This fully analytic model is capable of reproducing…

Space Physics · Physics 2017-03-07 Alexey Isavnin

White-light observations of the solar corona show that there are two characteristic types of Coronal Mass Ejections (CMEs) in terms of speed-height profiles: so-called fast CMEs that attain high speeds low in the corona and slow CMEs that…

Astrophysics · Physics 2007-05-23 W. Liu , X. P. Zhao , S. T. Wu , P. H. Scherrer