The Search for signals of technological activities in the galaxy

Research paper by Guillermo A. Lemarchand

Indexed on: 12 Dec '10Published on: 12 Dec '10Published in: arXiv - Astrophysics - Instrumentation and Methods for Astrophysics


In this article an analysis of the fundamentals used to search for extraterrestrial artificial signals in the galaxy, which have been developing for more than five decades, is presented. It is shown that the key factor for the success of these research projects is given by the technological civilizations lifetimes. Assuming the Principle of Mediocrity, estimations are made to determine the minimum number of civilizations that may co-exist in the galaxy and the probability of detecting a signal from them.