X-RAY SOURCES

Author: BOSCH I RAMON VALENTÍ.
Year: 2005.
University: BARCELONA [www.ub.es].
Place of defense: FACULTAD DE FÍSICA.
Place of preparation: FACULTAD DE FÍSICA.

Summary: The microcuásares are binary X-ray presenting relativistic jets that emit radio, powered by a compact object that falls in the field of the companion star (Acreción). The high-energy processes that take place in these jets generate very high energy particles which in turn emitted by different mechanisms of radiation from the band radio to gamma rays. The work developed along this thesis has been directed to predict and explain the emission of very high energy from the microcuásares. The most significant conclusions of the work are made that microcuásares are systems in which the conditions necessary to produce detectable radiation at all wavelengths, as has recently been demonstrated with the detection of TeV range in the microcuásar LS 5039. In connection with the gamma-band spectrum, radiation can be explained from models leptónicos which dominates the inverse Compton process of interaction between the relativistic electrons and photons jets environments. However, while the energy requirements are more extreme models based on proton interaction could also explain the observations at least in certain cases where there is interaction with the surrounding environment. The variability on time scales of minutes or more, not tied to the regions closer to the compact object, but those most external and jets (egacreción and precession), can the presence of dense fields of photons, the absorption of photons by creating couples should be taken into account. Looking to the future, developing new techniques to approach astrophysical problems associated with microcuásars will allow us to improve our understanding of the physical processes in these and other sources of high-energy, always keeping an overview of the objects to study.