radio emission


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Related to radio emission: solar radio emission
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.radio emission - an electromagnetic wave with a wavelength between 0.5 cm to 30,000 mradio emission - an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
sky wave - a radio wave that is reflected back to earth by the ionosphere or a communications satellite; permits transmission around the curve of the earth's surface
ground wave - a radio wave propagated on or near the earth's surface
radio signal - a radio wave used to transmit and receive messages
radio spectrum, radio-frequency spectrum - the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television
carrier wave, carrier - a radio wave that can be modulated in order to transmit a signal
short wave - a radio wave with a wavelength less than 100 meters (a frequency greater than 3 megahertz)
medium wave - a radio wave with a wavelength between 100 and 1000 meters (a frequency between 300 kilohertz and 3000 kilohertz)
long wave - a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz)
Translations
References in periodicals archive ?
Observations made so far with telescopes show a halo of radio emission in the central areas of some clusters.
The particles then adsorb radio emission and convert it to heat that accelerates enzymatic processes by more than four times.
But the observational discovery of these compact objects was only done in the middle of the 1960s from the measurement of an unusual Dirac-delta-shape pulse-like radio emission from the Crab Nebula [2,3] first observed by Chinese astronomers in 1054.
Later observations from the telescopes of the European VLBI network (EVN) and the Very Long Baseline Array (VLBA) in the USA revealed two distinct knots of radio emission. These knots then were seen to move away from each other.
South Africa's KAT-7 telescope, a sevendish array which is a precursor to the much larger MeerKAT telescope in the Karoo and to the Square Kilometre Array, has reached another major milestone by observing the radio emission from the neutral hydrogen gas (HI) in a nearby galaxy.
"By a happy accident, the telescopes will be sensitive to just the kind of radio emission that our civilisation is leaking into space," said scientist Dr Abraham Loeb, from Harvard University in the US.
The strong radio emission results from two jets of energetic particles shooting away from the center of the quasar in opposite directions.
In this paper, we present a temporal and spectral analysis of a subset of BATSE GRBs with smooth extended emission tails to search for signatures of the "high-energy afterglow," i.e., afterglow emission that initially begins in the gamma-ray phase and subsequently evolves into X-Ray, optical, and radio emission as the blast wave is decelerated by the ambient medium.
As the work continued from various telescopes, the group witnessed the distant radio emission's expansion.
For years, astronomers have been trying to map the early universe's neutral hydrogen gas via its 21-cm radio emission. In particular, they want to see how the first stars' high-energy radiation heated this gas, ionizing bubbles that spread across the infant universe.

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