Dean Mostafá has significantly contributed to high-energy particle astrophysics. His cutting-edge research spans a wide range of areas, from gamma-ray observations using the High Altitude Water Cherenkov (HAWC) Gamma-ray Observatory to groundbreaking work on cosmic-ray anisotropies and particle interactions using a unique multimessenger approach at energies well beyond the reach of the experiments at the most powerful man-made particle accelerators. His research has garnered widespread recognition, with 11 renowned papers with over 500 citations each and more than 2,000 citations annually since 2017.