James Webb telescope measures the starlight around the universe's biggest, oldest black holes for 1st time ever

Using the James Webb Space Telescope , astronomers have gotten the first-ever look at the light of ancient stars shining around some of the biggest, brightest and oldest black holes in the universe.

These results were possible thanks to JWST's superior sharpness and resolution. Over 120 hours of telescope time, the team observed six quasars, all estimated to be around 13 billion years old — some of the oldest objects in the universe. Using the improved data from JWST, the team managed to untangle the signals in these ancient galaxies by modeling which light appeared to be coming from a point source , and which light seemed to be originating from a more diffuse source . With the relative brightnesses in hand, the team then estimated the masses of each quasar and its host galaxy.

"One of the big questions is to understand how those monster black holes could grow so big, so fast," Yue said.

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