The cosmic infrared background spectrum

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Models, Background Radiation, Cosmic Dust, Cosmic Rays, Infrared Spectra, Radiative Transfer, Atmospheric Attenuation, Microwave Spectra, Visible Spectrum

Scientific paper

Exact calculations of the radiative-transfer equations in a dust-filled universe are used to predict spectra throughout the optical, IR, and microwave regions. The model assumes high-temperature sources at pregalactic epochs, together with associated dust. Source radiation, partially attenuated, might thus be observable in the optical of NIR (0.1-10 microns), while the optically thin dust emission could span the FIR or submillimeter region (100-1000 microns). Comparison of model spectra with currently available experimental data suggests that several such models are viable, or even required. New NIR measurements in the 1-100 micron region would be invaluable in ultimately determining the validity of such a theory.

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