afterglow

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afterglow

small amounts of light emitted by a phosphor after the stimulating radiation has ceased. Seen in x-ray intensifying screens and fluoroscopic screens.
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2-meter telescope in Southern California spotted a visible-light flash that brightened dramatically within about an hour, fitting the profile of a burst's afterglow.
Over the following 10 minutes, RINGO2 collected 5,600 photographs of the burst afterglow while the properties of the magnetic field were still encoded in its captured light.
Unlike the many hundreds of GRB afterglows seen by Swift over the last four years, the afterglow of GRB 080319B showed a signature of not just one jet pointed in our direction, but two.
Nearly all the afterglows that astronomers have detected come from gamma-ray bursts that arose in galaxies that lie 2 billion to 8 billion light-years away.
Because afterglows fade rapidly, we really had to scramble when we received the alert," Perley said.
Fortunately, three more short-burst afterglows were detected last summer, one by the HETE-2 instrument and two others by Swift (S&T: December 2005, page 21).
Previous X-ray images had captured a burst's afterglow, but not the burst itself, notes Swift principal investigator Neil Gehrels of NASA's Goddard Space Flight Center in Greenbelt, Md.
Hubble Space Telescope afterglow observations of the July 9th burst are particularly significant.
03 second, swiveled around, and imaged a weak, fast-fading X-ray afterglow that revealed the event's location to within about 8 arcseconds.
22 burst and its X-ray afterglow, first detected by the Italian satellite BeppoSAX, was also examined by NASA's Chandra X-ray Observatory.
The accurate position obtained by XRT and UVOT will also be flashed to astronomers worldwide, who will then rush to use ground-based telescopes and other satellites to catch the afterglow before it fades.
Loeb estimates that less than 1 percent of all afterglows are magnified by a lens.