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Titlebook: Radio Astronomy and Cosmology; David L. Jauncey Book 1977 International Astronomical Union 1977 Cosmology.Gravity.STR.Universe.astronomy

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书目名称Radio Astronomy and Cosmology
编辑David L. Jauncey
视频video
丛书名称International Astronomical Union Symposia
图书封面Titlebook: Radio Astronomy and Cosmology;  David L. Jauncey Book 1977 International Astronomical Union 1977 Cosmology.Gravity.STR.Universe.astronomy
描述337 F(e) = (z) where the angle between the directions III and 112 is equal to 8. r is the angular diameter effective distance of the epoch for recombination. F (8) ~ve have F(e) : f (e) ~ (S" ) e. . ~ is a Bessel function. It is assumed here that the spectrum of gravitational waves takes the form 1 hI‘::: hoK for all relevant wavelengths, a is beam width of the radio antenna, d= d~, and ~ is the duration of the process of recombinations in -time. The results for different beam widths are shown in Fig. 1. 338 I. D. NOVIKOV 1-. . . -__ 0. 5 1 1. 5 2 e‘ 0. 5 o and for a l‘ (solid line) and Fig. 1. The function f(8) for n for a = 2‘ (dotted line). These formula should be used in analysing the implications of future observations. Comparison with the observational data now available enables us to establish an upper limit for the energy density of long gravitational waves. This method is most sensitive for gravitational waves with A ~ ct The fluctuations ~; due to these waves have scale ~ 0. 03 GW rec 4 radian. If, according to modern observations, we take ~; < 10- , then 8 26 ~GW/Ey < 10- for those gravitational waves which have A = 5. 10 cm GW today where Ey is the energy density of rel
出版日期Book 1977
关键词Cosmology; Gravity; STR; Universe; astronomy
版次1
doihttps://doi.org/10.1007/978-94-010-1260-7
isbn_softcover978-90-277-0839-7
isbn_ebook978-94-010-1260-7Series ISSN 1743-9213 Series E-ISSN 2352-2186
issn_series 1743-9213
copyrightInternational Astronomical Union 1977
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