M.Sc. in Physics, 1999, UBA, Argentina Ph.D. in Astronomy, 2003, UNLP, Argentina, "Globular cluster systems in hierarchical clustering scenarios" Current position: Researcher (IAFE-CONICET) CV Publication list Contact: pellizza@iafe.uba.ar Since 2004 I have been working on high-energy astrophysics topics, investigating the origin of compact objects, and the mechanisms by which they emit high-energy electromagnetic radiation. My main research subjects include: High energy emission mechanisms. Some galactic X-ray binaries have been shown to be associated with sources of very high energy (MeV-TeV) electromagnetic radiation. The origin of this emission, and the radiation mechanisms are still unclear. We try to give answers to these questions by performing numerical simulations of different physical mechanisms producing high-energy electromagnetic radiation in the relevant astrophysical context. Gamma-ray bursts (GRBs) are brief pulses of gamma-ray radiation, believed to be produced by the collapse of massive stars, or the merger of two compact objects. GRBs are associated to distant galaxies. Searching for these galaxies and investigating their properties, we try to understand which are the stellar progenitors of these powerful explosions.