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Interplanetary imagers provide 2D projected views of the densest plasma parts of interplanetary coronal mass ejections (ICMEs) while in situ measurements provide magnetic field and plasma parameter measurements along the spacecraft…

Solar and Stellar Astrophysics · Physics 2016-10-26 P. Démoulin , M. Janvier , J. J. Masías-Meza , S. Dasso

Coronal mass ejections (CMEs) are routinely tracked with imagers in the interplanetary space while magnetic clouds (MCs) properties are measured locally by spacecraft. However, both imager and insitu data do not provide direct estimation on…

Solar and Stellar Astrophysics · Physics 2015-06-16 Miho Janvier , Pascal Demoulin , Sergio Dasso

Magnetic flux ropes within interplanetary coronal mass ejections are often characterized as simplistic cylindrical or toroidal tubes with field lines that twist around the cylinder or torus axis. Recent multi-point observations suggest that…

Solar and Stellar Astrophysics · Physics 2024-06-21 Andreas J. Weiss , Teresa Nieves-Chinchilla , Christian Möstl

We present multi-point in situ observations of a complex sequence of coronal mass ejections (CMEs) which may serve as a benchmark event for numerical and empirical space weather prediction models. On 2010 August 1, instruments on various…

Coronal mass ejections (CMEs) represent one type of the major eruption from the Sun. Their interplanetary counterparts, the interplanetary CMEs (ICMEs), are the direct manifestations of these structures when they propagate into the…

Solar and Stellar Astrophysics · Physics 2021-07-06 Qiang Hu , Wen He , Lingling Zhao , Edward Lu

We have studied three Interplanetary Coronal Mass Ejections (ICMEs) having clear signatures of magnetic cloud (MC) arrival at 1 AU and their associated solar sources during 2011 to 2013. Comparing the axial magnetic field strength (B0) of…

Solar and Stellar Astrophysics · Physics 2019-01-30 Ranadeep Sarkar , Nandita Srivastava

Interplanetary Coronal Mass Ejections (ICMEs) originate from the eruption of complex magnetic structures occurring in our star's atmosphere. Determining the general properties of ICMEs and the physical processes at the heart of their…

Solar and Stellar Astrophysics · Physics 2023-02-01 F. Regnault , A. Strugarek , M. Janvier , F. Auchère , N. Lugaz , N. Al-Haddad

We present an analysis of the ionic composition of iron for two interplanetary coronal mass ejections observed in May 21-23 2007 by the ACE and STEREO spacecraft in the context of the magnetic structure of the ejecta flux rope, sheath…

Space Physics · Physics 2015-06-11 Alysha Reinard , Benjamin Lynch , Tamitha Mulligan

Interplanetary coronal mass ejections (ICMEs) often consist of a shock wave, sheath region, and ejecta region. The ejecta regions are divided into two broad classes: magnetic clouds (MC) that exhibit the characteristics of magnetic flux…

Solar and Stellar Astrophysics · Physics 2020-09-30 Hongqiang Song , Jie Zhang , Xin Cheng , Gang Li , Qiang Hu , Leping Li , Shujun Chen , Ruisheng Zheng , Yao Chen

Coronal mass ejections (CMEs) observed near the Sun via LASCO coronographic imaging are the most important solar drivers of geomagnetic storms. ICMEs, their interplanetary, near-Earth counterparts, can be detected in-situ, for example, by…

Astrophysics · Physics 2008-11-26 V. Yurchyshyn , Q. Hu , R. P. Lepping , B. J. Lynch , J. Krall

Understanding the properties, especially the magnetohydrodynamic (MHD) invariants, of coronal mass ejections (CMEs) measured in-situ is key to bridging the CME properties from the Sun to interplanetary space. In order to investigate CMEs…

Predicting the magnetic field within an Earth-directed coronal mass ejection (CME) well before its arrival at Earth is one of the most important issues in space weather research. In this article, we compare the intrinsic flux rope type,…

Interplanetary coronal mass ejections (ICMEs) are a significant feature of the heliospheric environment and the primary cause of adverse space weather at the Earth. ICME propagation, and the evolution of ICME magnetic field structure during…

Space Physics · Physics 2019-05-20 S. W. Good , E. K. J. Kilpua , A. T. LaMoury , R. J. Forsyth , J. P. Eastwood , C. Möstl

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

Interplanetary coronal mass ejections (ICMEs) observed by the MESSENGER (MES) and Venus Express (VEX) spacecraft have been catalogued and analysed. The ICMEs were identified by a relatively smooth rotation of the magnetic field direction…

Space Physics · Physics 2016-01-20 S. W. Good , R. J. Forsyth

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…

Context. In the scope of space weather forecasting, it is crucial to be able to more reliably predict the arrival time, speed, and magnetic field configuration of coronal mass ejections (CMEs). From the time a CME is launched, the dominant…

Solar and Stellar Astrophysics · Physics 2023-09-28 K. Martinic , M. Dumbovic , J. Calogovic , B. Vrsnak , N. Al-Haddad , M. Temmer

Interplanetary coronal mass ejections (ICMEs) contain magnetic field and velocity fluctuations across a wide range of scales. These fluctuations may be interpreted as Alfv\'enic wave packets propagating parallel or anti-parallel to the…

Space Physics · Physics 2022-05-23 S. W. Good , L. M. Hatakka , M. Ala-Lahti , J. E. Soljento , A. Osmane , E. K. J. Kilpua

The solar wind conditions at one astronomical unit (AU) can be strongly disturbed by the interplanetary coronal mass ejections (ICMEs). A subset, called magnetic clouds (MCs), is formed by twisted flux ropes that transport an important…

Astrophysics · Physics 2009-11-13 S. Dasso , M. S. Nakwacki , P. Démoulin , C. H. Mandrini

Coronal Mass Ejections (CMEs) are energetic storms in the Sun that result in the ejection of large-scale magnetic clouds (MCs) in interplanetary space that contain enhanced magnetic fields with coherently changing field direction. The…

Solar and Stellar Astrophysics · Physics 2022-11-09 Sanchita Pal , Dibyendu Nandy , Emilia K J Kilpua
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