Mathematics – Logic
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaus..204....1h&link_type=abstract
The Extragalactic Infrared Background and its Cosmological Implications, Proceedings of IAU Symposium #204, held 15-18 August 20
Mathematics
Logic
1
Scientific paper
The extragalactic infrared background touches on many topics: The rate at which energy was generated in stars at different epochs; the corresponding number counts of galaxies observed at different red shifts; the related rate at which non-primordial helium and the heavy chemical elements were produced at these same epochs; the abundances of these elements that can be found in damped Lyman-alpha absorbers at commensurate red shifts; the abundances of the same elements in Galactic stars formed at similar epochs; the integrated supernova rates over all epochs, and the number of neutron stars and black holes in our locale within the Universe today. The distances from which TeV-gamma radiation at different energies can reach us are also intimately related to the infrared background spectrum. The purpose of this symposium is to seek a coherent picture into which all these pieces of observational evidence can be satisfactorily fitted. This has been the rationale in setting up the invited talks.
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