Speaker
Description
COSMICA is an open-source, high-performance numerical code that leverages GPU acceleration for modeling the solar modulation of galactic cosmic rays (GCR). It has been developed within the framework of the ICSC - Italian Research Center on High Performance Computing, Big Data, and Quantum Computing (Spoke-3). The software is continuously optimized to enhance its computational efficiency on NVIDIA architectures. COSMICA is integrated with SDEGnO, a specialized parameter search system also created within ICSC, which efficiently explores the vast parameter space associated with solar modulation studies. We utilize COSMICA to examine localized variations in diffusion parameters and their effects on GCR transport by analyzing the Forbush decrease (FD) effect, which is observed with high precision in daily GCR measurements by AMS-02 across a broad range of rigidities. Our results confirm the stability of the rigidity dependence of the diffusion tensor, thereby supporting the use of FDs as indicators of localized heliospheric conditions. The computational efficiency of COSMICA facilitates large-scale simulations and enhances our understanding of the factors regulating solar modulation.
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