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About

S. Mereghetti is a leading astrophysicist whose research centers on high-energy phenomena, particularly gamma-ray bursts (GRBs), blazars, and the development of space-based observatories. A key contribution is his work on the monumental 2009 December gamma-ray flare of the blazar 3C 454.3, when it became the brightest gamma-ray source in the sky. Mereghetti coordinated the intensive multifrequency campaign that monitored this extraordinary outburst, resulting in a highly cited (58 citations) 2010 paper that provided critical insights into the physics of relativistic jets and active galactic nuclei. This work exemplifies his expertise in multi-wavelength observations of transient cosmic events. Beyond blazars, Mereghetti has been instrumental in advancing GRB science through his involvement with the ECLAIRs micro-satellite mission, designed for real-time multi-wavelength GRB detection. His contributions bridge observational astrophysics and space instrumentation, enabling new discoveries about the most energetic explosions in the universe. With a career marked by leadership in major campaigns and missions, Mereghetti continues to shape our understanding of extreme astrophysical environments.