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Kilonova afterglow potentially spotted for first time 5nvklj





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Kilonova afterglow potentially spotted for first time

Dragon
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Post by Dragon Wed Mar 02, 2022 3:09 am

For the first time, Northwestern University-led astronomers may have detected an afterglow from a kilonova.

A kilonova occurs when two neutron stars—some of the densest objects in the universe—merge to create a blast 1,000 times brighter than a classical nova.

In this case, a narrow, off-axis jet of high-energy particles accompanied the merger event, dubbed GW170817.

Three-and-a-half years after the merger, the jet faded away, revealing a new source of mysterious X-rays.


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Kilonova afterglow potentially spotted for first time 334pu7m
Dragon
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Post by Dragon Wed Mar 02, 2022 3:11 am

Kilonova afterglow potentially spotted for first time Kilonova-afterglow-pot
Credit: NASA/CXC/M. Weiss

An artist’s conception illustrates the aftermath of a 'kilonova,' a powerful event that happens when two neutron stars merge.


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Kilonova afterglow potentially spotted for first time 334pu7m
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Post by Dragon Wed Mar 02, 2022 3:12 am



hese two images taken on May 26 and July 16, 2020, show the fading light of a kilonova located in a distant galaxy.

The kilonova appears as a spot to the upper left of the host galaxy.

The glow is prominent in the May 26 image but fades in the July 16 image


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Kilonova afterglow potentially spotted for first time 334pu7m

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