ATHARV is a tool that converts in-situ ICME time series into spatial maps assuming self-similar anisotropic expansion, demonstrated on 2023 multipoint data showing coherent flux-rope rotation with mesoscale inhomogeneity.
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Dual-spacecraft observations of a November 2021 CME confirm that the CAAP method reliably estimates instantaneous expansion speed from single-point data while revealing unexpected evolution in shock strength and magnetic flux.
An automated pipeline forecasts CME magnetic fields at L1 using initial magnetic obstacle data, achieving errors of roughly 5 hours in timing and 10 nT in strength comparable to full-event reconstructions.
CMEs during active solar phases are faster with stronger magnetic fields than in quiet phases (even after speed matching), while toroidal and poloidal field components decay similarly with distance and front-to-rear asymmetry increases.
Sympathetic filament and active-region eruptions produced two overlapping CMEs whose interaction compressed southward magnetic fields, driving a major geomagnetic storm with Dst ~ -333 nT.
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Visualizing the Magnetic Structure in Interplanetary Coronal Mass Ejections with ATHARV
ATHARV is a tool that converts in-situ ICME time series into spatial maps assuming self-similar anisotropic expansion, demonstrated on 2023 multipoint data showing coherent flux-rope rotation with mesoscale inhomogeneity.