The three images on the right record emission events for AT2018cow. The first shows the galaxy Z 137-068. The second down on the right has two markers ending close to the fuzzy bright source AT2018cow. The third down on the right is a sequence of dated images.
Astronomers Glimpse a Luminous Object Born From a Star’s Death. Credit: Raffaella Margutti, Northwestern University.
Apparent supernova is bright fuzzy light nearest to the right-angle bars intersection. Credit: Sloan Digital Sky Survey, NASA.
Astronomers using ground-based observatories caught the progression of a cosmic event nicknamed "the Cow," as seen in these three images. Credit: Daniel Perley, Liverpool John Moores University.
"Astronomers using ground-based observatories caught the progression of a cosmic event nicknamed "the Cow," as seen in these three images. Left: The Sloan Digital Sky Survey in New Mexico observed the host galaxy Z 137-068 in 2003, with the Cow nowhere in sight. (The green circle indicates the location where the Cow eventually appeared). Center: The Liverpool Telescope in Spain's Canary Islands saw the Cow very close to the event's peak brightness on June 20, 2018, when it was much brighter than the host galaxy. Right: The William Herschel Telescope, also in the Canary Islands, took a high-resolution image of the Cow nearly a month after it reached peak brightness, as it faded and the host galaxy came back into view."
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Last edited on 2 January 2021, at 04:46
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