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

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縱火

The 6C Surveyy, which was the first trial of aperture synthesis using the earth’s rotation, and much more is now technically possible. One of the most interesting features of a low frequency survey is its ability to detect preferentially sources with steep radio spectra and to be sensitive to sources of very low

肌肉

EXUDE

Spectra of Southern Radio Sourcesle, since the sources stronger than 0.35 Jy cover 3.5 sr. It is also a representative sample, since no selection was made on the basis of spectral index or identification. It cannot however be claimed as a complete sample, for two reasons. A substantial fraction of sources found in radio surveys at

虛假

Spectral Index Studies of Extragalactic Radio Sourcesexpected if one considers that the red-shift and luminosity distributions of a source sample vary with selection frequency and flux density limit. Intrinsic or induced correlations between spectral index and redshift or luminosity, or different redshift distributions of flat-and steep-spectrum sourc

OCTO

Book 1977ensitive 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

AMOR

P. Katgert,L. Padrielli,J. K. Katgert,A. G. Willis

紋章

Meditative

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