Dynamics of O$^{+}$ Ions during elevated Geomagnetic Activity due to Stealth Interplanetary Coronal Mass Ejection and High Speed Stream Interaction

Dynamics of O$^{+}$ Ions during elevated Geomagnetic Activity due to Stealth Interplanetary Coronal Mass Ejection and High Speed Stream Interaction | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 4 March 2025 V1 Latest version Share on Dynamics of O$^{+}$ Ions during elevated Geomagnetic Activity due to Stealth Interplanetary Coronal Mass Ejection and High Speed Stream Interaction Authors : Indu Venugopal 0009-0006-5587-1868 [email protected] , Ankush T. Bhaskar 0000-0003-4281-1744 , and Smitha V Thampi 0000-0002-0116-829X Authors Info & Affiliations https://doi.org/10.22541/au.174111503.38543128/v1 219 views 122 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract This study examines the abundance and energization of O$^{+}$ ions during a prolonged geomagnetic activity caused by a stealth coronal mass ejection (CME) and a subsequent high-speed solar wind stream (HSS) between 12 and 17 October 2016. Using observations from the Magnetospheric Multiscale (MMS) mission and Van Allen Probes, we analyze the effects of sustained geomagnetic activity on O$^{+}$ ion outflows and dynamics. The stealth ICME’s geoeffectiveness, amplified by its compression between the slow solar wind and the trailing HSS, led to enhanced O$^{+}$ ion fluxes in the magnetosphere. The O$^{+}$ ion flux enhancement is observed in both the inner and outer magnetosphere. This increase is related to intensified ion outflows from the polar ionosphere, driven by prolonged auroral activity. The possible sources of O$^{+}$ ions found in the outer magnetosphere include the ring current, plasma sheet, warm plasma cloak, and plasmaspheric drainage plume. During the peak storm period, selective energization of O$^{+}$ ions compared to H$^{+}$ ions was also observed, possibly due to non-adiabatic processes. Potential energization mechanisms include wave-particle interactions with electrostatic ion cyclotron waves, convective electric fields, and dynamic solar wind compression. The results highlight the role of solar wind-magnetosphere interactions during stealth CMEs and high speed streams (HSSs), on ion outflow and energy transfer, emphasizing their role in shaping magnetospheric heavy ion dynamics during geomagnetic storms. Supplementary Material File (1025867_0_merged_1740976430.pdf) Download 43.94 MB File (article_file.pdf) Download 43.91 MB Information & Authors Information Version history V1 Version 1 04 March 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keyword solar system physics Authors Affiliations Indu Venugopal 0009-0006-5587-1868 [email protected] Vikram Sarabhai Space Centre View all articles by this author Ankush T. Bhaskar 0000-0003-4281-1744 ISRO/Vikram Sarabhai Space Centre View all articles by this author Smitha V Thampi 0000-0002-0116-829X Vikram Sarabhai Space Centre View all articles by this author Metrics & Citations Metrics Article Usage 219 views 122 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Indu Venugopal, Ankush T. Bhaskar, Smitha V Thampi. Dynamics of O$^{+}$ Ions during elevated Geomagnetic Activity due to Stealth Interplanetary Coronal Mass Ejection and High Speed Stream Interaction. Authorea . 04 March 2025. DOI: https://doi.org/10.22541/au.174111503.38543128/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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