Document Details Document Type : Article In Journal  Document Title : Re-ionizing the universe without stars Re-ionizing the universe without stars   Subject : Astronomyِ  Document Language : English  Abstract : Recent observations show that the measured rates of star formation in the early universe are insufficient to produce re-ionization, and therefore, another source of ionizing photons is required. In this Letter, we examine the possibility that these can be supplied by the fast accretion shocks formed around the cores of the most massive haloes (10. 5  ISSN : 0004-640X  Journal Name : Astrophysics and Space Science  Volume : 335  Issue Number : 2  Publishing Year : 1432 AH 2011 AD  Article Type : Article  Added Date : Wednesday, April 25, 2012  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email Michael A Dopita Dopita, Michael A Researcher Doctorate michael.dopita@anu.edu.au L M Krauss Krauss, L M Researcher Doctorate   R S Sutherland Sutherland, R S Researcher Doctorate   C Kobayashi Kobayashi, C Researcher Doctorate   C H Lineweaver Lineweaver, C H Researcher Doctorate   Files File Name Type Description  33019.pdf pdf Abstract Back To Researches Page