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Of all the activity observed on the Sun, two of the most energetic events are flares and Coronal Mass Ejections (CMEs). Usually, solar active regions that produce large flares will also produce a CME, but this is not always true (Yashiro et…

太阳与恒星天体物理 · 物理学 2016-04-25 Monica G. Bobra , Stathis Ilonidis

In this work we performed a polarimetric study of a fast and wide coronal mass ejection (CME) observed on 12 July 2012 by the COR1 and COR2 instruments onboard Solar TErrestrial RElations Observatory (STEREO) mission. The CME source region…

太阳与恒星天体物理 · 物理学 2022-07-20 Marilena Mierla , Bernd Inhester , Andrei N. Zhukov , Sergei V. Shestov , Alessandro Bemporad , Philippe Lamy , Serge Koutchmy

Using high time cadence images from the STEREO EUVI, COR1 and COR2 instruments, we derived detailed kinematics of the main acceleration stage for a sample of 95 CMEs in comparison with associated flares and filament eruptions. We found that…

太阳与恒星天体物理 · 物理学 2015-06-05 B. M. Bein , S. Berkebile-Stoiser , A. M. Veronig , M. Temmer , B. Vrsnak

Aims: We investigate whether solar coronal mass ejections are driven mainly by coupling to the ambient solar wind or through the release of internal magnetic energy. Methods: We examine the energetics of 39 flux-rope like coronal mass…

天体物理学 · 物理学 2009-11-13 Prasad Subramanian , Angelos Vourlidas

The Sun and other solar-type stars have magnetic fields that permeate their interior and surface, extends through the interplanetary medium, and is the main driver of stellar activity. Stellar magnetic activity affects physical processes…

太阳与恒星天体物理 · 物理学 2023-05-15 Fabian Menezes , Adriana Valio , Yuri Netto , Alexandre Araújo , Christina Kay , Merav Opher

Coronal mass ejections (CMEs) are the main drivers of geomagnetic disturbances, but the effects of their interaction with Earth's magnetic field depend on their magnetic configuration and orientation. Fitting and reconstruction techniques…

空间物理 · 物理学 2018-04-09 Nada Al-Haddad , Teresa Nieves-Chinchilla , Neel P. Savani , Noe Lugaz , Ilia I. Roussev

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

The scenario of twin coronal mass ejections (CMEs), i.e., a fast and wide primary CME (priCME) preceded by previous CMEs (preCMEs), has been found to be favorable to a more efficient particle acceleration in large solar energetic particle…

太阳与恒星天体物理 · 物理学 2021-11-03 Bin Zhuang , Noé Lugaz , Tingyu Gou , Liuguan Ding

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

Solar coronal mass ejections (CMEs) can catch up and interact with preceding CMEs and solar wind structures to undergo rotation and deflection during their propagation. We aim to show how interactions undergone by a CME in the corona and…

太阳与恒星天体物理 · 物理学 2023-07-12 Anwesha Maharana , Camilla Scolini , Brigitte Schmieder , Stefaan Poedts

The Fourier analysis of the CME occurrence data observed by the SOHO satellite shows significant power around 1.9 yr., 1.2 yr., 265 day, 39 day and 26 day periodicities which are almost similar to the periodicities detected in the Fourier…

太阳与恒星天体物理 · 物理学 2009-09-25 K. M. Hiremath

The spatial inhomogeneity of the distribution of coronal mass ejection (CME) occurrences in the solar atmosphere could provide a tool to estimate the longitudinal position of the most probable CME-capable active regions in the Sun. The…

太阳与恒星天体物理 · 物理学 2017-03-30 N. Gyenge , T. Singh , T. S. Kiss , A. K. Srivastava , R. Erdélyi

Aims. We perform a statistical study of the relations between the properties of solar energetic electron (SEE) events measured by the MESSENGER mission from 2010 to 2015 and the parameters of the respective parent solar activity phenomena…

With the assumption of radial motion and uniform longitudinal distribution of coronal mass ejections (CMEs), we propose a method to eliminate projection effects from the apparent observed CME latitude distribution. This method has been…

天体物理学 · 物理学 2015-05-13 Song Wenbin , Feng Xueshang , Hu Yanqi

Simulating coronal mass ejections (CMEs) from their origin in active regions (ARs) to their propagation to Earth remains challenging, particularly when aiming to resolve AR scales and employ realistic magnetic field strengths without…

太阳与恒星天体物理 · 物理学 2026-05-08 Chaowei Jiang , Xueshang Feng , Liping Yang , Huichao Li , Jinhan Guo , Pingbing Zuo , Yi Wang

In a case study (June 6-7, 2008) we report on how the internal structure of a coronal mass ejection (CME) at 1 AU can be anticipated from remote observations of white-light images of the heliosphere. Favorable circumstances are the absence…

In this article, we present the multi-viewpoint and multi-wavelength analysis of an atypical solar jet based on the data from Solar Dynamics Observatory, SOlar, and Heliospheric Observatory, and Solar TErrestrial RElations Observatory. It…

太阳与恒星天体物理 · 物理学 2020-10-07 Reetika Joshi , Yuming Wang , Ramesh Chandra , Quanhao Zhang , Lijuan Liu , Xiaolei Li

Analysis of a database of solar coronal mass ejections (CMEs) and associated flares over the period 1996-2007 finds well-behaved power law relationships between the 1-8 AA flare X-ray fluence and CME mass and kinetic energy. We extrapolate…

太阳与恒星天体物理 · 物理学 2015-06-12 Jeremy J. Drake , Ofer Cohen , Seiji Yashiro , Nat Gopalswamy

A powerful coronal mass ejection (CME) occurred on 2017 September 10 near the end of the declining phase of the historically weak solar cycle 24. We obtain new insights concerning the geometry and kinematics of CME-driven shocks in relation…

太阳与恒星天体物理 · 物理学 2019-01-23 Ying D. Liu , Bei Zhu , Xiaowei Zhao

The estimation of CME arrival time strongly depends on the CME propagation models in interplanetary space and the geometrical aspects of the CME model. We conducted ensemble simulations of CMEs propagation with various elliptical cone…