• Ph.D.,1996 University of Paris XI, Orsay, France

Research Interests:

As a member of the Gamma Ray Group (http://www.physics.utah.edu/gammaray/), Stephan works at the development of the VERITAS experiment. This array of telescopes will be used to study the gamma ray sky above 50GeV. Stephan is involved in the calibration, simulation and analysis of the VERITAS experiment. The field of gamma ray astronomy is a very rapidly expanding one as experiments around the world recently permitted to discover very high energy radiations from a variety of astrophysical objects where the universe most violent phenomena are at play. The original motivation for the development of Gamma ray astronomy was the mystery associated to the origin of cosmic rays. Despite the numerous exciting discoveries during the last 10 years, the question of the origin of hadron cosmic rays remains widely open and constitutes the main challenge to the present generation of gamma ray observatories.

Selected Recent Publications

• Minimal Stereoscopic Analysis for Imaging Atmospheric Cherenkov Telescope Arrays, S. LeBohec, C. Duke and P. Jordan. 2004, submitted to Astroparticle Physics.
• SGARFACE: A Novel Detector For Microsecond Gamma Ray Bursts, S. LeBohec, F. Krennrich and G. Sleege, 2004, Submitted to Astroparticle Physics.
• Observation of M87 at 400 GeV with the Whipple 10 Meter Telescope, LeBohec, S. et al., 2004, ApJ, 610, 156L
• The cosmic ray background as a tool for relative calibration of atmospheric Cherenkov telescopes, LeBohec, S.and Holder, J., 2003, Astropart.Phys., Vol.19, 2, p. 221-233.
• Detection Techniques of Microsecond Gamma-Ray Bursts using Ground-Based Telescopes, Krennrich, F., Le Bohec, S., &Weekes, T.C. 2000, Ap.J. 529, 506.
• Gamma-ray Observations of the Galactic Plane at Energies E > 500 GeV, LeBohec S. et al. 2000, ApJ 539, 209.