afterglow

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afterglow

1. the glow left after a light has disappeared, such as that sometimes seen after sunset
2. the glow of an incandescent metal after the source of heat has been removed
3. Physics luminescence persisting on the screen of a cathode-ray tube or in a gas-discharge tube after the power supply has been disconnected

afterglow

[′af·tər‚glō]
(atomic physics)
(meteorology)
A broad, high arch of radiance or glow seen occasionally in the western sky above the highest clouds in deepening twilight, caused by the scattering effect of very fine particles of dust suspended in the upper atmosphere.
(plasma physics)
The transient decay of a plasma after the power has been turned off.

afterglow

The glow in a material after the removal of an external source of fire to which it is exposed, or after the cessation (natural or induced) of flames.
References in periodicals archive ?
The observations show that the initial afterglow light was polarized by 28 percent, the highest value ever recorded for a burst, and slowly declined to 16 percent, while the angle of the polarized light remained the same.
These violent interactions give rise to bright afterglows that have been observed at X-ray, ultraviolet, visible, infrared, and radio wavelengths.
Within the next 2 years, he says, astronomers will document gamma-ray bursts and their afterglows at distances more remote than those of the galaxies and quasars that now are the most-distant light-emitting objects known.
Screening from thick molecular clouds provides a natural explanation for so-called "dark bursts," which lack associated afterglows.
Other telescopes, both in space and on the ground, are now studying the burst's afterglow and the region surrounding the burst.
After analyzing the July 9th bursts's fading afterglow, Fox and his colleagues estimated the opening angle of the jet that produced the GRB: about 15[degrees].
Often a burst is followed by a lingering afterglow, at wavelengths from X-rays to visible light to radio, that arises as the jet plows through surrounding interstellar matter in the following hours, days, and weeks.
These and other observations indicate the radio emission is not part of the burst's waning afterglow but is radiation from the burst's home galaxy, she and her colleagues assert.
The visible-light afterglow from GRB 000301C appears to have passed through such a lens: Instead of rapidly fading, the light remained bright.
Earlier evidence in other burst afterglows, such as color and brightness changes and weak spectral signs, was only circumstantial, he says.
If the new models are correct, afterglows should be visible much more often than the bursts themselves.