Diagnosing the reionization of the universe - The absorption spectrum of the intergalactic medium and Lyman alpha cloudsThe thermal and ionization evolution of a uniform intergalactic medium composed of H and He and undergoing reionization is studied. The diagnosis of the metagalactic ionizing radiation background at z of about three using metal line ratios for Lyman limit quasar absorption line systems is addressed. The use of the He II Gunn-Peterson effect to diagnose the reionization source and/or nature of the Hy-alpha forest clouds is considered.
Document ID
19930039640
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Giroux, Mark L. (NASA Headquarters Washington, DC United States)
Shapiro, Paul R. (Texas Univ. Austin, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: After the first three minutes; Proceedings of the 1st Astrophysics Workshop, Univ. of Maryland, College Park, Oct. 15-17, 1990 (A93-23605 07-90)