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Todor S. Stanev

Title: Office: Phone: email: Web:

Professor 254 Sharp Lab (302) 831-1495 stanev@bartol.udel.edu Home page

Fields of Research

Dr. Stanev is studying cascades developed by interactions of high-energy particles in different media. His earliest efforts were concentrated on showers initiated by cosmic rays in the Earth's atmosphere. These showers are detected at and below the surface by different cosmic ray detectors and the knowledge of the cascade development makes possible the reconstruction of the type of the primary cosmic particle and the characteristics of its interaction.

Dr. Stanev's work on atmospheric cascades has contributed to the measurements of the inelastic cross-section and of the interaction properties at ultra high energies. He has also participated in establishing the underground muon and neutrino fluxes produced by cosmic rays, which form the background for neutrino astronomy. His work on atmospheric cascades has been performed in close connection with leading experiments, such as the Fly's Eye air shower detector and the IMB proton decay detector.

In recent years Dr. Stanev has applied his knowledge of cascade processes to astrophysical objects. He has described possible mechanisms for production of high-energy signals at binary systems and has derived limits on dimensions and dynamics of such systems. His studies of the particle acceleration and interactions in young supernova remnants have led to relations between the pulsar luminosity and the emergence of possible high energy signals from the recent Supernova 1987a in the Large Magellanic Cloud. During the last couple of years he has studied interactions of cosmic rays on stars, including the Sun.

Dr. Stanev is a member of the South Pole Air Shower Experiment (SPASE) team that searches for ultra high energy gamma ray signals from astrophysical sources with an air shower array at the South Pole.