Metal enrichment of the intracluster medium from protogalaxies and the Gamma-Ray bursters

Makoto Hattori, Nobuo Terasawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Metal enrichment of clusters of galaxies by protogalactic star formation is discussed. We show that the observational requirement of metal ejection from protogalaxies into the intracluster medium (ICM) suggests pregalactic massive star formation bursts in the extended halo of protogalaxies. Our results predict that galaxies have an extended halo populated with a number of supernova remnants. The predicted large radius of the extended halo of our Galaxy is consistent with the distribution of γ-ray bursters observed by BATSE on the Compton Gamma Ray Observatory satellite, if neutron stars possibly formed in the extended halo of the Galaxy are the source of γ-ray bursters.

Original languageEnglish
Pages (from-to)L55-L58
JournalAstrophysical Journal
Volume406
Issue number2 PART 2
DOIs
Publication statusPublished - 1993 Apr 1
Externally publishedYes

Keywords

  • Galaxies: clustering
  • Galaxies: formation
  • Gamma rays: bursts

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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