On the magnetic field evolution of interplanetary coronal mass ejections from 0.07 to 5.4 au
Christian M"ostl, Emma E. Davies, Eva Weiler, Ute V. Amerstorfer, Andreas J. Weiss, Hannah T. R"udisser, Martin A. Reiss, Satabdwa Majumdar, Timothy S. Horbury, Stuart D. Bale, Daniel Heyner
arXiv:2512.04730v2 Announce Type: replace
Abstract: A central question for understanding interplanetary coronal mass ejection (ICME) physics and improving space weather forecasting is how ICMEs evolve in interplanetary space. We have updated one of the most comprehensive in situ ICME catalogs to date, which now includes 1976 events from 11 space missions covering over 34 years, from December 1990 to August 2025. We have combined existing catalogs including magnetic obstacles and identified and added boundaries of an additional 807 (40.8%) events ourselves. With this catalog, we demonstrate the most extensive analysis to date of total ICME magnetic field values as a function of heliocentric distance. Parker Solar Probe has observed 6 ICMEs at $arXiv:2512.04730v2 Announce Type: replace
Abstract: A central question for understanding interplanetary coronal mass ejection (ICME) physics and improving space weather forecasting is how ICMEs evolve in interplanetary space. We have updated one of the most comprehensive in situ ICME catalogs to date, which now includes 1976 events from 11 space missions covering over 34 years, from December 1990 to August 2025. We have combined existing catalogs including magnetic obstacles and identified and added boundaries of an additional 807 (40.8%) events ourselves. With this catalog, we demonstrate the most extensive analysis to date of total ICME magnetic field values as a function of heliocentric distance. Parker Solar Probe has observed 6 ICMEs at $

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