Magnetic interaction analysis of multiple interplanetary coronal mass ejections leading to a historic geomagnetic storm in May 2024

Abstract

Interplanetary coronal mass ejections (ICMEs), the large-scale eruptive phenomena capable of shedding a huge amount of solar magnetic helicity and energy are potential in driving strong geomagnetic storms. They complexly evolve while preceded and followed by other large-scale structures e.g. ICMEs. Magnetic interaction among multiple ICMEs may result intense and long-lived geomagnetic storms. Our aim is to understand the reason of substantial changes in the geoeffectivity of two meso-scale separated counterparts of a complex solar wind structure through investigating their magnetic content e.g. helicity, energy and magnetic interaction among multiple ICMEs. We utilized the insitu observations of solar wind from Wind and Solar Terrestrial Relations Observatory-A (STA) spacecraft during the strongest geomagnetic storm period in past two decades on May 10-11, 2024 and heliospheric imagers onboard STA. Our investigation confirms complex interactions among five ICMEs resulting in distinct counterparts within a coalescing large-scale structure. These counterparts possess substantially different magnetic contents. We conclude that the complex counterpart resulted from the interaction among common-origin ICMEs observed by STA, favorably orientated for magnetic reconnection, had 1.6 and 2.8 times higher total magnetic energy and helicity, respectively, than the counterpart containing a left-handed filament-origin ICME observed by Wind. The left-handed ICME non-favorably oriented for magnetic reconnection with the surrounding right-handed, common-origin ICMEs. Therefore, two medium-separated counterparts despite belonging to a common solar wind structure, were potential to lead different geoeffectivity. This ultimately challenges space weather predictions based on early observations.

9 pages, 4 figures

References in corpus (25)

• Observations of an extreme storm in interplanetary space caused by successive coronal mass ejections
• The Evolution and Role of Solar Wind Turbulence in the Inner Heliosphere
• Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars
• Deriving the radial distances of wide coronal mass ejections from elongation measurements in the heliosphere - Application to CME-CME interaction
• The Solar and Geomagnetic Storms in May 2024: A Flash Data Report
• Accuracy and Limitations of Fitting and Stereoscopic Methods to Determine the Direction of Coronal Mass Ejections from Heliospheric Imagers Observations
• Identification of Magnetic Flux Ropes from Parker Solar Probe Observations during the First Encounter
• The Interaction of Two Coronal Mass Ejections: Influence of Relative Orientation
• Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters
• Arrival time calculation for interplanetary coronal mass ejections with circular fronts and application to STEREO observations of the 2009 February 13 eruption
• On the Mesoscale Structure of CMEs at Mercury's Orbit: BepiColombo and Parker Solar Probe Observations
• Sheath-Accumulating Propagation of Interplanetary Coronal Mass Ejection
• Coronal mass ejection deformation at 0.1 au observed by WISPR
• Uncovering Erosion Effects on Magnetic Flux Rope Twist
• An Observationally Constrained Analytical Model for Predicting the Magnetic Field Vectors of ICMEs at 1 AU
• A magnetic cloud prediction model for forecasting space weather relevant properties of Earth-directed coronal mass ejections
• A Sun-to-Earth analysis of magnetic helicity of the 17-18 March 2013 interplanetary coronal mass ejection
• First observations of a geomagnetic superstorm with a sub-L1 monitor
• Tracking Reentries of Starlink Satellites During the Rising Phase of Solar Cycle 25
• Turbulence Properties of Interplanetary Coronal Mass Ejections in the Inner Heliosphere: Dependence on Proton Beta and Flux Rope Structure
• Investigating The Cross-section of Coronal Mass Ejections Through the Study of Non-Radial Flows with STEREO/PLASTIC
• Deconstructing the Properties of Solar Super Active Region 13664 in the Context of the Historic Geomagnetic Storm of 2024 May 10-11
• Unveiling Key Factors in the Solar Eruptions Leading to the Solar Superstorm in 2024 May
• A holistic approach to understand Helium enrichment in Interplanetary coronal mass ejections: New insights
• Automatic detection of large-scale flux ropes and their geoeffectiveness with a machine learning approach