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Related papers: Identifying Flux Rope Signatures Using a Deep Neur…

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Magnetic reconnection is essential to release the flux rope during its ejection. The question remains: how does the magnetic reconnection change the flux rope structure? Following the original study of \citet{Qiu2007}, we compare properties…

Solar and Stellar Astrophysics · Physics 2014-09-30 Qiang Hu , Jiong Qiu , B. Dasgupta , A. Khare , G. M. Webb

Formed through magnetic field shearing and reconnection in the solar corona, magnetic flux ropes are structures of twisted magnetic field, threaded along an axis. Their evolution and potential eruption are of great importance for space…

Solar and Stellar Astrophysics · Physics 2017-09-13 Chris Lowder , Anthony Yeates

We present a generalized elliptical cylindrical flux rope model for interplanetary coronal mass ejections (ICMEs) that allows for a non zero poloidal component in the internal magnetic field. We introduce a two step reconstruction algorithm…

Solar and Stellar Astrophysics · Physics 2025-12-02 Marti Masso Moreno , Carlos Arturo Perez-Alanis , P. K. Manoharan

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

Interplanetary Coronal Mass Ejections are the manifestation of solar transient eruptions, which can significantly modify the plasma and magnetic conditions in the heliosphere. They are often preceded by a shock, and a magnetic flux rope is…

Solar and Stellar Astrophysics · Physics 2015-03-23 Miho Janvier , Sergio Dasso , Pascal Demoulin , Jimmy Masias-Meza , Noe Lugaz

Magnetic clouds (MCs) are observed insitu by spacecraft. The rotation of their magnetic field is typically interpreted as the crossing of a twisted magnetic flux tube, or flux rope, which was launched from the solar corona. The detailed…

Space Physics · Physics 2022-12-21 V. Lanabere , P. Démoulin , S. Dasso

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

The recent launch of Solar Orbiter and BepiColombo opened a brief window in which these two spacecraft were positioned in a constellation that allows for the detailed sampling of any Earth-directed CMEs. Fortunately, two such events…

Interplanetary coronal mass ejections (ICMEs) have low proton beta across a broad range of heliocentric distances and a magnetic flux rope structure at large scales, making them a unique environment for studying solar wind fluctuations.…

Solar and Stellar Astrophysics · Physics 2023-10-17 S. W. Good , O. K. Rantala , A. -S. M. Jylhä , C. H. K. Chen , C. Möstl , E. K. J. Kilpua

One "strong" magnetic cloud (MC) with the magnetic field magnitude reaching $\sim$ 40 nT at 1 au during 2012 June 16-17 is examined in association with a pre-existing magnetic flux rope (MFR) identified on the Sun. The MC is characterized…

Solar and Stellar Astrophysics · Physics 2022-08-03 Qiang Hu , Chunming Zhu , Wen He , Jiong Qiu , Lan K. Jian , Avijeet Prasad

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

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

The Grad-Shafranov reconstruction is a method of estimating the orientation (invariant axis) and cross-section of magnetic flux ropes using the data from a single spacecraft. It can be applied to various magnetic structures such as magnetic…

Instrumentation and Methods for Astrophysics · Physics 2012-11-12 Alexey Isavnin , Emilia K. J. Kilpua , Hannu E. J. Koskinen

The large-scale magnetic structure of interplanetary coronal mass ejections (ICMEs) has been shown to affect the galactic cosmic ray (GCR) flux measured in situ by spacecraft, causing temporary decreases known as Forbush decreases (Fds). In…

We report on the detailed and systematic study of field-line twist and length distributions within magnetic flux ropes embedded in Interplanetary Coronal Mass Ejections (ICMEs). The Grad-Shafranov reconstruction method is utilized together…

Solar and Stellar Astrophysics · Physics 2015-09-16 Qiang Hu , Jiong Qiu , Sam Krucker

Flux transfer events (FTEs) are a type of magnetospheric phenomena that exhibit distinctive observational signatures from the in-situ spacecraft measurements across the Earth's magnetopause. They are generally believed to possess a magnetic…

Space Physics · Physics 2023-09-20 Shuo Wang , Ying Zou , Qiang Hu , Xueling Shi , Hiroshi Hasegawa

Accurate forecasts of Coronal Mass Ejection (CME) arrival times and impact geometry remain a major challenge for space-weather operations. Coronagraph-based techniques typically achieve mean absolute errors of order ten hours, while in situ…

Solar and Stellar Astrophysics · Physics 2025-12-02 Marti Masso Moreno , Carlos Arturo Perez-Alanis , P. K. Manoharan

To understand the global-scale physical processes behind coronal mass ejection (CME)-driven geomagnetic storms and predict their intensity as a space weather forecasting measure, we develop an interplanetary CME flux rope-magnetosphere…

Solar and Stellar Astrophysics · Physics 2023-07-04 Souvik Roy , Dibyendu Nandy

Interplanetary coronal mass ejections (ICMEs) are one of the main drivers for space weather disturbances. In the past, different approaches have been used to automatically detect events in existing time series resulting from solar wind in…

The interaction between interplanetary small-scale magnetic flux ropes and the magnetic field in the ambient solar wind is an important topic to understand- ing the evolution of magnetic structures in the heliosphere. Through a survey of…

Solar and Stellar Astrophysics · Physics 2015-05-19 Hui Tian , Shuo Yao , Qiugang Zong , Jiansen He , Yu Qi