Black holes PDF Print E-mail

Black holes are some of most fascinating objects in physics. They not only capture the attention of scientists, but they also stimulate the imagination of different branches of popular culture, including writers and film directors.


Black holes appear naturally within the Einstein theory of General Relativity, which is the currently accepted theory of the gravitational field. The theory predicts the existence of extremely dense objects, which could have the mass of the entire Earth in a region of the size of a marble.


The physics around a black hole is far from the basic notions one learns from ordinary daily experience. Concepts like space and time, usually perceived as “absolute” and “immutable”, become relative and dynamical near a black hole. The gravitational field around a black hole is so intense that not even light can escape from the hole, and hence it is black.


It has been proved that a black hole is the final stage of a star of a mass about three times that of our Sun, after it has run out of fuel. Moreover, it has been observed that most of the galaxies, including our Milky Way, contain in their centers super massive black holes of million times the solar mass. This suggests that these black holes are responsible for the formation of structures -and eventually life- in the Universe.


Black holes also pose a number of open questions in theoretical physics, since they naturally provide a bridge to explore the quantization of gravity. Nowadays, this elusive task can be regarded as “the holy grail” since, if conquered, it would allow describing the gravitational field at a microscopic level.


Currently, our research group focuses in unraveling some of the open questions related with different aspects of black hole physics, including among others, the microscopic origin of their evaporation, mechanical stability and thermal properties, the behavior in presence of matter fields and their effects on remotely located observers.