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Coronal mass ejections (CMEs) are energetic expulsions of organized magnetic features from the Sun. The study of CME quasi-periodicity helps establish a possible relationship between CMEs, solar flares, and geomagnetic disturbances. We used…

太阳与恒星天体物理 · 物理学 2023-02-15 Xia Li , Hui Deng , Feng Wang , Linhua Deng , Ying Mei

Coronal mass ejections (CMEs) may disturb the solar wind either by overtaking it, or by expanding into it, or both. CMEs whose front moves faster in the solar wind frame than the fast magnetosonic speed, drive shocks. Such shocks are…

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…

太阳与恒星天体物理 · 物理学 2022-06-22 Jiaqi Lin , Feng Wang , Linhua Deng , Hui Deng , Ying Mei , Yangfan Xie

Solar coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic field from the Sun into the corona and interplanetary space. They are the most significant drivers of adverse space weather at Earth and other locations in…

太阳与恒星天体物理 · 物理学 2012-02-20 Jason P. Byrne

Coronal Mass Ejections (CMEs) contributes to the perturbation of solar wind in the heliosphere. Thus, depending on the different phases of the solar cycle and the rate of CME occurrence, contribution of CMEs to solar wind parameters near…

太阳与恒星天体物理 · 物理学 2019-01-30 Wageesh Mishra , Nandita Srivastava , Zavkiddin Mirtoshev , Yuming Wang

The familiar correlation between the speed and angular width of coronal mass ejections (CMEs) is also found in solar cycle 24, but the regression line has a larger slope: for a given CME speed, cycle 24 CMEs are significantly wider than…

太阳与恒星天体物理 · 物理学 2014-08-18 Nat Gopalswamy , Sachiko Akiyama , Seiji Yashiro , Hong Xie , Pertti Mäkelä , Grzegorz Michalek

The primary objective of this study is to connect the coronal mass ejections (CMEs) to their source regions, primarily creating a CME source region (CSR) catalogue, and secondly probing into the influence the source regions have on…

太阳与恒星天体物理 · 物理学 2023-10-27 Satabdwa Majumdar , Ritesh Patel , Vaibhav Pant , Dipankar Banerjee , Aarushi Rawat , Abhas Pradhan , Paritosh Singh

Coronal mass ejections (CMEs) are the most dynamic phenomena in our solar system. They abruptly disrupt the continuous outflow of solar wind by expelling huge clouds of magnetized plasma into interplanetary space with velocities enabling to…

太阳与恒星天体物理 · 物理学 2016-12-07 Manuela Temmer

As a follow-up study on Sun-to-Earth propagation of fast coronal mass ejections (CMEs), we examine the Sun-to-Earth characteristics of slow CMEs combining heliospheric imaging and in situ observations. Three events of particular interest,…

太阳与恒星天体物理 · 物理学 2016-03-23 Ying D. Liu , Huidong Hu , Chi Wang , Janet G. Luhmann , John D. Richardson , Zhongwei Yang , Rui Wang

This study addresses the limitations of single-viewpoint observations of Coronal Mass Ejections (CMEs) by presenting results from a 3D catalog of 360 CMEs during solar cycle 24, fitted using the GCS model. The dataset combines 326…

太阳与恒星天体物理 · 物理学 2024-02-21 Harshita Gandhi , Ritesh Patel , Vaibhav Pant , Satabdwa Majumdar , Sanchita Pal , Dipankar Banerjee , Huw Morgan

Coronal mass ejections (CMEs) are large-scale ejections of plasma and magnetic field from the solar corona, which propagate through interplanetary space at velocities of $\sim$100--2500~km~s$^{-1}$. Although plane-of-sky coronagraph…

太阳与恒星天体物理 · 物理学 2011-06-09 Shane A. Maloney , Peter T. Gallagher

Since Coronal Mass Ejections (CMEs) are the major drivers of space weather, it is crucial to study their evolution starting from the inner corona. In this work we use Graduated Cylindrical Shell (GCS) model to study the 3D evolution of 59…

太阳与恒星天体物理 · 物理学 2020-08-12 Satabdwa Majumdar , Vaibhav Pant , Ritesh Patel , Dipankar Banerjee

We investigate the Sun-Earth dynamics of a set of 38 well-observed Coronal Mass Ejections(CMEs) using data from the STEREO, SOHO missions and WIND instrument. We seek to quantify the relative contributions of Lorentz force and aerodynamic…

太阳与恒星天体物理 · 物理学 2019-07-31 Nishtha Sachdeva

Our aim is to investigate the possible physical association between consecutive coronal mass ejections (CMEs). Through a statistical study of the main characteristics of 27761 CMEs observed by SOHO/LASCO during the past 20 years. We found…

太阳与恒星天体物理 · 物理学 2020-03-18 Alejandro Lara. Nat Gopalswamy , Tatiana Niembro , Román Pérez-Enríquez , Seiji Yashiro

Solar coronal mass ejections (CMEs) show a large variety in their kinematic properties. CMEs originating in active regions and accompanied by strong flares are usually faster and accelerated more impulsively than CMEs associated with…

天体物理学 · 物理学 2007-10-11 T. Toeroek , B. Kliem

The kinematic properties of coronal mass ejections (CMEs) suffer from the projection effects, and it is expected that the real velocity should be larger and the real angular width should be smaller than the apparent values. Several attempts…

太阳与恒星天体物理 · 物理学 2015-05-20 Y. Wu , P. F. Chen

Solar Coronal mass ejections (CMEs) are large-scale ejections of plasma and magnetic field from the corona, which propagate through interplanetary space. CMEs are the most significant drivers of adverse space weather on Earth, but the…

太阳与恒星天体物理 · 物理学 2012-10-22 Shane Maloney

The Solar TErrestrial RElations Observatory (STEREO) provides high cadence and high resolution images of the structure and morphology of coronal mass ejections (CMEs) in the inner heliosphere. CME directions and propagation speeds have…

太阳与恒星天体物理 · 物理学 2015-03-31 Savani , N. P. , Davies , J. A. , Davis , C. J. , Shiota , D. , Rouillard , A. P. , Owens , M. J. , Kusano , K. , Bothmer , V. , Bamford , S. P. , Lintott , C. J. , Smith , A

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…

太阳与恒星天体物理 · 物理学 2015-05-20 P. K. Manoharan , A. Mujiber Rahman

Understanding the evolution of radial sizes and instantaneous expansion speeds of coronal mass ejections (CMEs) is crucial for assessing their impact duration on Earth's environment. We introduce a non-conventional approach to derive the…

太阳与恒星天体物理 · 物理学 2024-09-30 Anjali Agarwal , Wageesh Mishra
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