Needling the early universe

Details Needling the early universe Needling the early universe

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324...46h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. 46-59.

Astronomy and Astrophysics

Astrophysics

23

Astronomical Models, Background Radiation, Cosmic Rays, Red Shift, Stellar Evolution, Universe, Galactic Evolution, Interstellar Matter

Scientific paper

The authors explore the possibility that the entire cosmic microwave background (CMB) can be produced by a bright population of pregalactic stars at a redshift z of a few hundred. The thermalizing source of the background is a combination of silicate, amorphous carbon, and graphite spherical grains, together with graphite needle-shaped conducting grains which give rise to the long wavelength opacity. It is found that the interaction of starlight with a small amount of these grains gives rise to a spectrum consistent with the available measurements of the CMB throughout the observable frequency range. The authors investigate the occurrence of deviations away from a perfect thermal spectrum in a primordial 2.7K blackbody caused by an early stellar population and dust.

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