Deuterium and Helium Absorption at High Redshift: Mapping the Abundance, Density and Ionization of Primordial Gas

Simple item page
dc.creatorHogan, Craig J.
dc.date1997-02-04
dc.date1997-05-02
dc.date.accessioned2026-07-07T08:58:25Z
dc.date.available2026-07-07T08:58:25Z
dc.descriptionSpectra of quasars at high redshift with high resolution and high signal-to-noise allow in favorable circumstances detection of absorption by deuterium and ultimately measurement of its primordial abundance. Ultraviolet spectra of high redshift quasars allow measurement of absorption by the most abundant cosmic absorber, singly ionized helium, thereby mapping gas even in the most rarefied cosmic voids. These new techniques already provide significant constraints on cosmological models but will soon become much more precise.
dc.description11 pages, LaTeX, including 4 figures. To appear in the Proceedings of the 18th Texas Symposium on Relativistic Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/9702044
dc.identifierhttp://arxiv.org/abs/astro-ph/9702044
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/147318
dc.subjectAstrophysics
dc.titleDeuterium and Helium Absorption at High Redshift: Mapping the Abundance, Density and Ionization of Primordial Gas
dc.typetext

Files

Collections

arXiv