James Webb Telescope Sees Giant Black Holes Growing from Cosmic Seeds
Sciences et technologies

James Webb Telescope Sees Giant Black Holes Growing from Cosmic Seeds

How could the first black holes in our Universe become as massive as billions of suns? Astronomers may finally have an answer. Observations made with the James Webb Space Telescope (JWST) suggest that these monstrous black holes originated from huge cosmic seeds.

Quasars are some of the brightest objects in our sky. At first glance they look like stars. Hence their name, which corresponds to the abbreviation “quasi-stellar radio source”. But that’s not true. THAT discovered that quasars actually hide the luminous cores of distant galaxies. The nuclei are fed by supermassive black holes that appear to be insatiable. Real space monsters. As a result, quasars tend to literally outshine the rest of the galaxy that harbors them. How will eclipse the field .

“The quasar is several orders of magnitude larger than its parent galaxy. And the previous images were not clear enough to see what the host galaxy looks like with all its stars.”confirms Minghao Yue, a researcher from Massachusetts Institute of Technology (MIT, USA), in a press release. But thanks to sensitivity and exceptional results obtained by the James Webb Space Telescope (JWST), the situation has changed. In L’Astrophysical JournalAstronomers at MIT describe how they studied six ancient quasars—estimated to be 13 billion years old—over the course of several months. And accumulate more than 120 hours of observations. To finally observe for the first time, emitted by the stars of the host galaxies of three of these quasars.

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