He was born in Mexico City in 1945. He graduated in physics at the Facultad de Ciencias [Faculty of science] of the Universidad Nacional Autónoma de México (UNAM) [National Autonomous University of Mexico]. He worked for his doctorate degree at the Universität Konstanz [University of Konstanz], Germany. He has been researcher and professor at the Universidad Autónoma Metropolitana (UAM) [Autonomous Metropolitan University], at the Universidad Autónoma de Guanajuato [Autonomous University of Guanajuato], and is a member of the Sistema Nacional de Investigadores (SNI) [National Researcher System].
At the end of the eighties he turned his interest toward applications of supergravity in cosmology, in particular in quantum cosmology, models in which the very early and small universe is described as an electron, through a universe "quantum mechanics". The work initiated seems to have been premonitory, for work on the subject by several groups surfaced soon after. He attracted considerable interest, including that of the most renowned cosmologist in the world, Stephen W. Hawking, who co-authored a paper with Dr. Obregón, the only time, so far, he does so with a physicist working in Latin America.
In the nineties, he suggested with his aides a novel structure of gravitation and supergravitation norm theories, quite similar to that of particle theories. They also showed the first models in which they propose an S duality in these gravitation and supergravitation theories.
He was founder and area chief of the área de Gravitación y Astrofísica [Gravitation and Astrophysics area] of the Physics department of the Universidad Autónoma Metropolitana (UAM) [Autonomous Metropolitan University]. Member of Consejo Académico [Academic Council] of the Universidad Autónoma Metropolitana-Iztapalapa (UAM-I) [Autonomous Metropolitan University-Iztapalapa]. Director of the Departamento de Física de la Universidad de Guanajuato [Department of Physics of the University of Guanajuato]. Member of the Consejo Directivo [Board of Directors] and the Foro Permanente del Consejo de Ciencia y Tecnología del Estado de Guanajuato [Permanent Forum of the Guanajuato State Council of Science and Technology]. Dr. Obregón is a member of the Consejo Consultivo de Ciencias de la Presidencia de la República (CCC) [Science Consulting Council of the President’s Office].
He has received the Premio Nacional de Ciencias y Artes [National Award for Science and Arts]; the Premio de Investigación Científica [Scientific Research Prize] from the Sociedad Mexicana de Física [Mexican Physics Society]; Honorary Mention of the Gravity Research Foundation; Best Researcher of the University of Guanajuato Prize; Premio Estatal de Ciencias Alfredo Duges, de Guanajuato [Alfred Duges State of Guanajuato Science Prize]. Fellow of the American Physical Society.
He has published over 70 scientific papers in international journals, and has tutored five Ph.D. dissertations, six Master’s and five B.S. theses.
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