José Miguel Rodríguez Espinosa


Present Position: Senior Staff Astronomer


2021-23 Ascription to the IAA

1999-21 Senior Staff Astronomer, IAC

1994-99 GTC 10m Project Scientist, Tenerife, Spain

1991-94 Head, Research Division, IAC, Tenerife, Spain

1989-91 Research Staff Astronomer, IAC, Tenerife, Spain

1987-89 Assoc. Professor (Tenured), U. Complutense, Madrid, Spain

1985-87 Scientific Fellow, European Southern Observatory, Germany

1983-85 Fullbright Scholar, U. of California San Diego, USA

1983-84 Physics Instructor, San Diego Mesa College, San Diego, USA

1979-83 Research Assistant, U. of California San Diego, USA

1977-79 del Amo Foundation Fellow, U. of California San Diego, USA

1976-77 Teaching Assistant, U. Complutense, Madrid, Spain


More than 150 research papers and invited lectures in Astrophysics

Main areas of interest: Active Galaxies, Star-formation in galaxies, Instrumentation, The high-z Universe

PI of a Consolider-Ingenio grant “First Science with the GTC” (5.5M€, MICINN, Spain)

Co-Investigator of ISOPHOT, a space instrument flown by the Infrared Space Observatory (ISO).

Editor, Instrumentation for Large Telescopes, 1997 Cambridge Univ. Press

Title of Talk I

“ Scientific: Two ionized bubbles before re-ionsation”


First explain that the Universe is reionised and why. I will then explain a new method to measure the sizes of smoothly evolving ionised bubbles at the epoch of reionisation, using the ionising continuum photons (assuming they are emitted by galaxies) and the mean cosmic density, which is a function of the redshift. I will derive two ionised bubbles one at redshift 6.5, and another one at redshift 7.1. I will then show a method to compute the radius of ionized bubbles that can be used for individual sources and for proto-clusters. I will compare our method with other methods often used in the literature. Specially the method used by Yajima (2018) that it is commonly used. I will also explain why this later method gives very close results. Finally I will compare our method with other methods that have recently appeared in the literature. In particular, I will show that the method derived by Endsley and Stark (2022) gives very different results than other methods. In particular, this method has several parameters that are left to the user, thus not constrained by usual parameters. s”

Title of Talk  II

 “ IAU. The IUA is more than the eye sees”


"how the IAU works, and how the IAU is organized as well as its activities”