3 papers
astro-ph.IM2025
Derivative-Aligned Anticipation of Forbush Decreases from Entropy and Fractal Markers
Juan D. Perez-Navarro, D. Sierra-Porta
We develop a feature-based framework to anticipate Forbush decreases in one-minute neutron-monitor records by tracking sliding-window invariants from information theory, scaling, a…
astro-ph.IM2025
Graph-Based Light-Curve Features for Robust Transient Classification
Jesús D. Petro-Ramos, David J. Ruiz-Morales, D. Sierra-Porta
We investigate graph-based representations of astronomical light curves for transient classification on a quality-controlled, class-balanced subset of the MANTRA benchmark (minimum…
astro-ph.SR2025
Vision-Based CNN Prediction of Sunspot Numbers from SDO/HMI Images
Fabian C. Quintero-Pareja, Diederik A. Montano-Burbano, Santiago Quintero-Pareja +1
Sunspot numbers provide the longest continuous record of solar activity and remain a key index for heliophysical research and space-weather applications. Standard sunspot determina…