The paper may be downloaded at the following link: http://fr.calameo.com/books/000145333477ac4808aec
SUMMARY:
The principal objective of this study was to investigate the formation and evolution of quasars.
First, a method to build the count density-distance curve for quasars was
proposed. Then, the relative magnitude of quasars versus time was investigated, and led to a first order rate kinetics for the decay of quasars. From the first order rate decay, we could conclude that relative magnitude is a good measure of the quasar nuclear activity.
We found out that quasars were formed by coalescence in a period between 10 and 12.5 Gyr ago. This observation provides us some insights on the environmental conditions under which they were formed (collision rate, density of the universe, and chaotic conditions).