Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...256l..33h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 256, May 15, 1982, p. L33-L35.
Astronomy and Astrophysics
Astrophysics
10
Anisotropy, Background Radiation, Cosmology, Galactic Evolution, Relic Radiation, Microwaves, Quadrupoles, White Noise
Scientific paper
The possible anisotropy arising if a significant fraction of the existing background radiation was created in a recent epoch by uniformly distributed sources of radiation which thermalized dust or molecules is analytically discussed. Observable properties of the projected anisotropy are noted to include a temperature anisotropy at large angles being white noise and independent of galaxy formation models, a smearing out of fluctuations at small angles, and a dependency of the amplitude of fluctuations on the correlation length and the dispersion of luminosity/mass during production of the radiation. The last is noted to be an observable indicator of pregalactic activity and inhomogeneity. The quadrupole amplitude is calculated at varying amplitudes, and it is shown that variations with variations in the wavelength of observations could support a model of the universe and galactic formation not based on primordial fluctuations.
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