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Renowned scholar Juna Kollmeier named director of U of T's Canadian Institute for Theoretical Astrophysics

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Renowned scholar Juna Kollmeier named director of U of T’s Canadian Institute for Theoretical Astrophysics
Juna Kollmeier, who will become the new director of CITA on July 1, is an observationally oriented astrophysicist whose research focuses on supermassive black holes, the Milky Way and the intergalactic medium (photo by Bret Harman/TED)
Renowned astrophysicist
Juna Kollmeier, on faculty at the Observatories of the Carnegie Institution for Science, has been named the new director of the University of Toronto’s Canadian Institute for Theoretical Astrophysics (CITA), a research centre focused on the origin and evolution of the universe and other phenomena discovered by modern astronomy. ....

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Most distant quasar with powerful radio jets discovered

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IMAGE: This artist s impression shows how the distant quasar P172+18 and its radio jets may have looked. To date (early 2021), this is the most distant quasar with radio jets ever.
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Credit: ESO/M. Kornmesser
With the help of the European Southern Observatory s Very Large Telescope (ESO s VLT), astronomers have discovered and studied in detail the most distant source of radio emission known to date. The source is a radio-loud quasar a bright object with powerful jets emitting at radio wavelengths that is so far away its light has taken 13 billion years to reach us. The discovery could provide important clues to help astronomers understand the early Universe. ....

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This Black Hole Is Really Taking Its Time Eating a Poor Star

This Black Hole Is Really Taking Its Time Eating a Poor Star
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Filed to:all sky automated survey for supernovae
The star loses mass every time it passes the black hole. (Gif: NASA’s Goddard Space Flight Centre/Chris Smith (USRA/GESTAR))
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On November 14, 2014, a telescope spotted a burst of light in a galaxy 570 million light-years away. It was thought to be a supernova, an arrestingly bright explosion that marks a star’s death. This week, astronomers revealed that the burst was not a supernova after all, but rather a black hole having dinner one of many repeating “meals,” as the black hole slowly gobbles up a star stuck in its orbit. ....

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Astronomers Find The Oldest, Most Distant Galaxy to Date

Astronomers Find The Oldest, Most Distant Galaxy to Date
MATT WILLIAMS, UNIVERSE TODAY
6 JANUARY 2021
Since time immemorial, philosophers and scholars have contemplated the beginning of time and even tried to determine when all things began. It s only been in the age of modern astronomy that we ve come close to answering that question with a fair degree of certainty.

According to the most widely-accepted cosmological models, the Universe began with the Bang Bang roughly 13.8 billion years ago.
Even so, astronomers are still uncertain about what the early Universe looked like since this period coincided with the cosmic Dark Ages . Therefore, astronomers keep pushing the limits of their instruments to see when the earliest galaxies formed. ....

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