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1
An Introduction to
Radio Astronomy
The extension of the source counts in surveys of extreme sensitivity has, however
, contributed dramatically to the astrophysics of radio-source evolution.
Anothercosmologicaltest, therelationbetweenapparentsource
diameterandluminosity ...
Bernard F. Burke, Francis Graham-Smith, 2010
On this basis, the minimum distance to the radio source is 3 kiloparsecs. There
remains the doubtful possibility that the three H 1 clouds are all actually nearby,
and simply have radial velocities which are of the proper magnitude to fall in the ...
Sir Francis Graham-Smith, 1952
3
Extragalactic Astronomy and Cosmology: An Introduction
The observed length-scales are often impressive, in that the total extent of the
radio source can reach values of up to 1 Mpc. The position of the optical quasar
coincides with the compact radio source, which has an angular extent of ≪ 1 and
is ...
4
Tools of
Radio Astronomy
The problem of source confusion remains, but the interest in radio source counts
as a cosmological tool has declined in the last 30 years, since radio sources
evolve strongly with time. Thus, the interpretation of source counts in terms of a ...
Thomas L. Wilson, Kristen Rohlfs, Susanne Hüttemeister, 2009
5
The Invisible Universe: The Story of
Radio Astronomy
These were given the generic name of “radio source.” Whenever a larger radio
telescope or more sensitive radio receiver was used, more radio sources were
discovered. Today tens to thousands of radio sources are known. The accuracy
with ...
6
Radio Astronomy Today: Papers Designed to Present ...
As we have seen, the radio source is very large, so that we are dealing with
intergalactic dimensions rather than galactic. This seems to be true of the majority
of extragalactic radio sources. Fourthly, in NGC 1316, we have an SO galaxy
which ...
Henry Procter Palmer, 1963
As we have seen, the radio source is very large, so that we are dealing with
intergalactic dimensions rather than galactic. This seems to be true of the majority
of extragalactic radio sources. Fourthly, in NGC 1316, we have an SO galaxy
which ...
8
Sources and Scintillations: Refraction and Scattering in ...
Interstellar Scattering The interstellar scattering of the radio emission, caused by
galaxies along the line of sight from the radio source to the observer and by the
intergalactic medium, increases the apparent angular size of the compact radio ...
Richard Strom, Peng Bo, Mark Walker, 2001
9
Radio Astronomy and Cosmology
V. THE RADIO SOURCE 3C 303 3C 303 has a very interesting history and is an
example of my third category of cooperation between radio and optical observers
. Wyndham (1966) identified the source as an N-type galaxy, but noted that there
...
10
New Cosmic Horizons: Space Astronomy from the V2 to the ...
a large (2° x l/2°) radio source in the 1950s. In 1972 the English astronomers
David Clark and James Caswell had started a radio survey of all radio-emitting
supernova remnants visible from Australia, and they found that W50 had an ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «RADIO SOURCE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
radio source w wiadomościach.
Mysterious radio bursts come from outside our galaxy
"At cosmological distances, this indicates that they are more luminous than bursts from any known transient radio source," the authors noted, before concluding ... «Ars Technica, Lip 13»
Mysterious radio waves emitted from nearby galaxy
An unknown object in the nearby galaxy M82 has started sending out radio waves, ... His best guess is still that the radio source is some kind of dense object ... «New Scientist, Kwi 10»
