radio source density
1Radio galaxy — Radio galaxies and their relatives, radio loud quasars and blazars, are types of active galaxy that are very luminous at radio wavelengths (up to 1038 W between 10 MHz and 100 GHz). The radio emission is due to the synchrotron process. The… …
2Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …
3Source counts — The source counts distribution of radio sources from a radio astronomical survey is the cumulative distribution of the number of sources (N) brighter than a given flux density (S). It is one out of a half dozen cosmological tests that was… …
4Third Cambridge Catalogue of Radio Sources — Infobox Astronomical survey name = 3C caption = organization = Radio Astronomy Group, University of Cambridge alt names = wavelength = 159 MHz radio source = Mullard Radio Astronomy Observatory goals = First detailed survey of radio sources… …
5Second Cambridge Catalogue of Radio Sources — Infobox Astronomical survey name = 2C caption = organization = Radio Astronomy Group, University of Cambridge alt names = wavelength = 81.5 MHz radio source = Cambridge Interferometer goals = products = 2C Catalogue website = The Second Cambridge …
6Ooty Radio Telescope — Radio Telescope at Ooty Organization Tata Institute of Fundamental Research …
7First Cambridge Catalogue of Radio Sources — Infobox Astronomical survey name = 1C caption = organization = Radio Astronomy Group, University of Cambridge alt names = wavelength = 3.7 m radio source = goals = products = 1C Catalogue in journal (MNRAS) website = The First Cambridge Catalogue …
8Noise (radio) — In radio reception, noise is the superposition of white noise (also called static ) and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from… …
9Spectral density — In statistical signal processing and physics, the spectral density, power spectral density (PSD), or energy spectral density (ESD), is a positive real function of a frequency variable associated with a stationary stochastic process, or a… …
10Point source — For other uses, see Point source (disambiguation). A point source is a single identifiable localized source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources… …
