Searching for long faint astronomical high energy transients: a data driven approach

• DOI: 10.1007/s10686-023-09915-7
• Publication Date: 2023-11-22T12:02:30Z
• Authors: Riccardo Crupi; Giuseppe Dilillo; Elisabetta Bissaldi; Kester Ward; Fabrizio Fiore; Andrea Vacchi
• Keywords: Pathfinder

Abstract HERMES Pathfinder is an in-orbit demonstration consisting of a constellation six 3U nano-satellites hosting simple but innovative detectors for the monitoring cosmic high-energy transients. The main objective to prove that accurate position transients can be obtained using miniaturized hardware. transient by studying delay time arrival signal different hosted on low-Earth orbits. In this context, we need develop novel tools fully exploit future scientific data output Pathfinder. paper, introduce new framework assess background count rate spaceborne, high energy detector; key step towards identification faint astrophysical We employ neural network estimate lightcurves timescales. Subsequently, fast change-point and anomaly detection technique called Poisson-FOCuS identify observation segments where statistically significant excesses in observed relative exist. test software archival from NASA Fermi Gamma-ray Burst Monitor (GBM), which has collecting area level same order magnitude those performances are discussed analyzed over period both low solar activity. were able confirm events Fermi-GBM catalog, flares gamma-ray bursts, found events, not present database, could attributed flares, terrestrial flashes, bursts galactic X-ray flashes. Seven these selected further analyzed, providing localisation tentative classification.