Cosmological implications of COBE

Details Cosmological implications of COBE Cosmological implications of COBE

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..222..187c&link_type=abstract

After the first three minutes. AIP Conference Proceedings, Volume 222, pp. 187-201 (1991).

Mathematics

Logic

1

Background Radiations, Origin And Formation Of The Universe, Observational Cosmology

Scientific paper

We examine the constraints placed by FIRAS and DIRBE on radiation production in the early Universe. IRAS galaxies must produce a submillimetre background at some level and, if evolutionary effects are large, one can already place an interesting upper limit on the epoch of galaxy formation. A variety of pregalactic sources could have produced radiation, in particular, the VMOs whose black hole remnants are sometimes invoked to explain the dark mass in galactic halos. In some circumstances such pregalactic radiation would have been reprocessed into the far-IR or submillimetre bands by cosmological dust. This problem has been studied in detail by Bond, Carr & Hogan (1990), with particular emphasis on the anisotropies expected, and this paper summarizes the main results of that work. The VMO-plus-dust scenario is still consistent with FIRAS data but it may soon be excluded, in which case the radiation would need to be in the near-IR.

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