Academic Commons

Presentations (Communicative Events)

Molecular Hydrogen Formation in the Early Universe: New Implications From Laboratory Measurements

Savin, Daniel Wolf; Miller, Kenneth; Kreckel, H.; Bruhns, H.; Urbain, X.; Glover, S. C. O.; Cizek, M.

We have performed the first energy-resolved measurement of the associative detachment (AD) reaction H- + H → H2 + e-: This reaction is the dominant formation pathway for H2 during the epoch of first star formation in the early universe. Despite being the most fundamental anion-neutral chemical reaction, experiment and theory have failed to converge in both magnitude and energy dependence. The uncertainty in this rate coefficient severely limits our under- standing of the formation of the first stars and protogalaxies.


More About This Work

Academic Units
Astronomy and Astrophysics
Published Here
April 5, 2013
Academic Commons provides global access to research and scholarship produced at Columbia University, Barnard College, Teachers College, Union Theological Seminary and Jewish Theological Seminary. Academic Commons is managed by the Columbia University Libraries.