4–9 Oct 2026
Europe/Dublin timezone

CROCS and VALERIE: Web-Based Radio Diagnostics and Source Localization in the Heliosphere

7 Oct 2026, 16:30
15m
Talk DASH General Session 10

Speaker

Dr Vratislav Krupar (UMBC/GPHI & NASA/GSFC)

Description

Solar radio bursts provide remote signatures of energetic electrons and CME-driven shocks, but their interpretation often depends on coordinated multi-spacecraft observations and reliable estimates of radio-source locations. We present two NASA Goddard Space Flight Center web tools designed to support these analyses. Coordinated Radiodiagnostics of CMEs and Solar Flares (CROCS; https://parker.gsfc.nasa.gov/crocs.html) provides time-selectable displays of radio flux and polarization measurements from Parker Solar Probe, Solar Orbiter, STEREO, and Wind, enabling comparative analysis of solar eruptive activity across multiple observing platforms. Visual Analytics for Localizing Emission from Radio-Source Interplanetary Events (VALERIE; https://science.gsfc.nasa.gov/swaves/valerie.html) uses STEREO/WAVES direction-finding measurements to estimate the locations of interplanetary radio sources. Its stereoscopic mode triangulates sources observed simultaneously by STEREO-A and STEREO-B (Krupar et al., Solar Physics, 2014). A newly developed single-spacecraft mode uses STEREO-A measurements together with the wavevector-corrected ray-sphere method (WCRS; Krupar et al., ApJL, 2026). We describe the underlying methods, present representative event analyses, and demonstrate how CROCS and VALERIE support practical investigations of solar and interplanetary radio emission.

Author

Dr Vratislav Krupar (UMBC/GPHI & NASA/GSFC)

Presentation materials

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