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Researchers have identified the oldest black hole ever observed, dating from the beginning of the universe, and determined that it is ‘eating’ its host galaxy to death. The study, published in the journal Nature, used the James Webb Space Telescope (JWST) to locate the black hole, which formed 400 million years after the Big Bang, more than 13 billion years ago.

#blackhole #jameswebbspacetelescope #wion.

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Researchers using the James Webb Space Telescope have uncovered the oldest black hole ever detected—and declared a new era in astronomy.

It was found at the center of GN-z11, a galaxy first discovered in 2017, about 13.4 billion light-years away from our Milky Way galaxy—but about 100 times smaller. That means it exists just 400 million years after the Big Bang, which is thought to have created the universe. However, the black hole looks to be about a billion years old, suggesting problems with theories about how quickly black holes form.

The discovery, announced in a paper published today in the journal Nature, is the result of the sensitivity of JWST, which can see deep into the infrared, detecting old light that has been traveling across deep since the dawn of time.

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Researchers have discovered the oldest black hole ever observed, dating from the dawn of the universe, and found that it is ‘eating’ its host galaxy to death.

The international team, led by the University of Cambridge, used the NASA/ESA/CSA James Webb Space Telescope (JWST) to detect the black hole, which dates from 400 million years after the Big Bang, more than 13 billion years ago. The results, which lead author Professor Roberto Maiolino says are “a giant leap forward,” are reported in the journal Nature.

That this surprisingly —a few million times the mass of our sun—even exists so early in the challenges our assumptions about how black holes form and grow. Astronomers believe that the supermassive black holes found at the center of galaxies like the Milky Way grew to their current size over billions of years. But the size of this newly-discovered black hole suggests that they might form in other ways: they might be ‘born big’ or they can eat matter at a rate that’s five times higher than had been thought possible.

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6D Heterotic Little String Theories(LSTs) are a subsector of every 6D SUGRA (with at least one tensor multiplet), after decoupling gravity. As such, while possessing usual QFT-like properties such as global symmetries, they also possess gravity-like properties such as T-duality, which makes them an interesting intermediate. Recently, a fruitful line of research has been to chart the landscape of T-dual LSTs, and establish certain invariants across this T-duality, which includes the 5D Coulomb branch dimension, and the 2-Group structure constants (mixed anomalies). In this talk, we will argue that the rank of the flavor algebra is another invariant across this duality. This involves using 6D anomaly cancellation conditions and carefully taking into account potential ABJ anomalies. We will then discuss some interesting novel LSTs with non-trivial flavor holonomies, focusing on their T-duality structure. Based on arXiv:2311.02168.

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You have probably heard of the Fermi Paradox, but if you haven’t, here it is in a nutshell: Given the high probability that alien life exists out there in the universe (bearing in mind the vastness of space and that we keep finding planets within habitable zones) why has nobody got in touch yet? If there are so many other civilizations out there, possibly at far more advanced stages than we are because of how long the universe has dragged on, surely at least one would send out messages or probes, or do what we are doing: Desperately searching for signs of life?

Answers to the paradox range from the optimistic to the downright frightening. It could be that we simply haven’t been looking long enough, nor emitting our own traceable signatures for aliens to find us yet. Or it could be that no aliens will ever make it to the point where they are able to make contact with other species, destroying themselves long before they get to the kind of tech required to do so.

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