THE SPECTRUM OF FOSSIL HE-I AND HE-II RECOMBINATION LINES

Authors
DUBROVICH VK STOLYAROV VA
Citation
Vk. Dubrovich et Va. Stolyarov, THE SPECTRUM OF FOSSIL HE-I AND HE-II RECOMBINATION LINES, Astronomy letters, 23(5), 1997, pp. 565-572
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy letters → ACNP
ISSN journal
10637737
Volume
23
Issue
5
Year of publication
1997
Pages
565 - 572
Database
ISI
SICI code
1063-7737(1997)23:5<565:TSOFHA>2.0.ZU;2-9
Abstract
We consider the formation of spectral disturbances of cosmic microwave background (CMB) radiation at the epoch of helium recombination at re dshifts z approximate to 2700 and z approximate to 6000 with special e mphasis on the decimeter-wavelength range. It is shown that, depending on the set of cosmological parameters, the amplitude of the disturban ces of the Planck CMB spectrum, Delta T/(CMB), due to the He III and H e II recombinations at decimeter wavelengths can reach 10(-6) and 3 x 10(-7), respectively.