Statistics – Computation
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...367..420b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 367, Feb. 1, 1991, p. 420-454. Research supported by NSERC.
Statistics
Computation
87
Computational Astrophysics, Cosmic Dust, Relic Radiation, Submillimeter Waves, Astronomical Models, Astronomical Spectroscopy, Cosmic Background Explorer Satellite, Intergalactic Media, Radiative Transfer
Scientific paper
A general formalism is developed for describing the spectrum and the anisotropy of radiation from primeval dust as a nearly isotropic cosmic background with fluctuations. The theory incorporates spatial and temporal variations in the density of both luminosity and dust and is sufficiently robust to treat emission by point sources, as well as smoother emission, in high and low optical depth situations. The fluctuations are calculated using linear perturbation theory for arbitrary dust and luminosity clumping, and are calculated nonperturbatively for compact IR sources using shot-noise models. For many realistic models, a large accompanying NIR background is predicted. It is shown that, while spectal information alone provides only coarse information about the dust abundance and type, the redshift, and the other parameters, it may provide a powerful probe of pregalactic history when used in combination with the anisotropy signal.
Bond Richard J.
Carr Bernard J.
Hogan Craig J.
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