Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987cha%26a..11....7x&link_type=abstract
Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 11, March 1987, p. 7-9. Translation.
Astronomy and Astrophysics
Astrophysics
Background Radiation, Cosmic Dust, Cosmic Rays, Emission Spectra, Galactic Evolution, Interstellar Matter, Hydrogen, Lyman Spectra, Neutral Gases, Temperature Distribution
Scientific paper
The paper discusses the radiative spectrum of the dust heated by Population III (very massive objects before the formation of galaxies), for the two cases of no Lyman cutoff and with Lyman cutoff. By numerical integration, in the case of no Lyman cutoff, (little neutral hydrogen), the radiation from dust will be very strong, it will cause a distortion of 0.1-0.3 K around the peak of the cosmic background radiation and will certainly be observed in the wavelength range of 100 and 1000 microns. In the case of large neutral hydrogen abundance (hence Lyman cutoff), the radiation will be negligibly small compared to the cosmic background radiation.
Bao Chu-Xian
Xie Guang-Zhong
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