The present project aims to deepen into the comprehension of the underlying physics and dynamics of some of the most emblematic scenarios in the field of Relativistic Astrophysics, like the relativistic jets produced in active galactic nuclei, microquasars and progenitors of gamma-ray bursts, and many other processes involving compact objects (neutron stars, black holes).
In order to achieve these goals the project follows both theoretical and computational approaches, strongly relying in multidimensional numerical magneto-hydrodynamical and radiative transfer simulations. Given its computational basis, the project establishes a tight collaboration with computing scientists to assist the scientific teams to perform cutting-edge optimization and parallelization of our codes, as well as data analysis (i.e., visualization). The main areas of research of the project and their broad objectives are the following:

• Relativistic jets. We will deepen into the stability properties and structure, as well as the formation, acceleration, and collimation mechanisms of AGN jets, using three-dimensional magneto- hydrodynamical and emission simulations. In a different scenario, we shall explain and model the gamma-ray emission from microquasar jets.
• Progenitors of gamma-ray bursts. We will explore the mechanism of formation, blast and fade of these celestial objects by means of multidimensional magneto-hydrodynamical simulations, paying particular attention to their emission properties.
• Physics of neutron stars. We shall investigate the thermal evolution of magnetized neutron stars and study the thermal emission from these objects and their magnetospheres. Magneto-hydrodynamical simulations will be also used to probe the structure and dynamics of pulsar magnetospheres.
• Gravitational radiation. Using perturbative and full numerical relativity codes we will compute the emission of gravitational radiation due to accretion processes on to compact objects, gravitational stellar core collapse to neutron stars and black holes, pulsating and rapidly-rotating relativistic stars, and the merger of binaries of neutron stars.
• We open a new line of research devoted to non-ideal relativistic magnetohydrodynamics, which will be a subject of interest for many of the aforementioned astrophysical scenarios.