000007421 001__ 7421
000007421 005__ 20250123152510.0
000007421 037__ $$aSEMIN-2025-0020
000007421 100__ $$aDeshpande, Ketaki
000007421 245__ $$aElectron Density Mapping: Insights from Radio and In-Situ Observations & EUHFORIA Modeling
000007421 260__ $$c2025
000007421 269__ $$c2025-01-08
000007421 520__ $$aMapping the coronal electron density remains a challenging task, as we still rely on rather old 1D electron density models, most of which are derived from remote sensing observations and lack validation with in situ measurements. The novel observations from Parker Solar Probe (PSP) provide a unique opportunity to validate these models and enhance space weather modeling capabilities. In this study, we analyze type Ill radio bursts observed during PSP's second perihelion. By employing radio triangulation, we estimate the 3D radio source positions and map the electron densities along the burst propagation path. These results are then compared with in situ electron density measurements from PSP. Additionally, we use EUHFORIA (European Heliospheric Forecasting Information Asset) to model electron densities at the PSP location and the radio source positions. Our findings indicate that bursts occurring within a few minutes from the same source can exhibit significantly different propagation paths. A comparison between radio-derived and in sit densities reveals a discrepancy of one order of magnitude. We also perform simulations using GONG and ADAPT -GONG magnetic maps as input. Both simulations suggest that type III bursts propagate along higher-density regions; however, results obtained with ADAPT - GONG maps show a better match with PSP in sit densities and predict higher density values overall.
000007421 536__ $$a3BOURSE_DESHPANDE/$$c3BOURSE_DESHPANDE/$$f3BOURSE_DESHPANDE
000007421 594__ $$aSTCE
000007421 6531_ $$aElectron density
000007421 6531_ $$aType III radio Bursts
000007421 6531_ $$aTriangulation
000007421 6531_ $$aEUHFORIA
000007421 773__ $$tIndian Institute of Technology Indore (IITI), India
000007421 8560_ $$fketaki.deshpande@ksb-orb.be
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000007421 980__ $$aSEMIN