5/5/2023 0 Comments Black hole quasar![]() “What we found are three ultra-massive black holes that assembled their mass during the cosmic noon, the time 11 billion years ago when star formation, active galactic nuclei (AGN), and supermassive black holes, in general, reach their peak activity,” she added.Ībout half of all the stars in the universe were born during cosmic noon. But you can only catch these rare and extreme objects with a large volume simulation,” Ni said. “It’s a very computationally challenging task. Her findings from the Astrid simulations show something completely mind-boggling - the formation of black holes can reach a theoretical upper limit of 10 billion solar masses. It’s only possible on large supercomputers like Frontera,” Ni said. ”We used 2,048 nodes, the maximum allowable in the large queue, to launch this simulation on a routine basis. It’s a pure Frontera-based simulation,” Ni continued.įrontera is ideal for Ni’s Astrid simulations because of its capability to support large applications that need thousands of compute nodes, the individual physical systems of processors and memory that are harnessed together for some of science’s toughest computations. ”Frontera is the only system that we performed Astrid from day one. ![]() Ni developed Astrid using the Texas Advanced Computing Center’s (TACC) Frontera supercomputer, the most powerful academic supercomputer in the U.S., funded by the National Science Foundation(NSF). Study lead author Yueying Ni, Harvard–Smithsonian Center for Astrophysics, presenting at the 2022 Frontera User Meeting, Texas Advanced Computing Center. “We found that one possible formation channel for ultra-masssive black holes is from the extreme merger of massive galaxies that are most likely to happen in the epoch of the ‘cosmic noon,” said Yueying Ni, a postdoctoral fellow at the Harvard–Smithsonian Center for Astrophysics. Through simulations run on TACC’s Frontera supercomputer, astrophysicists have gained insight into the origin of these behemoth black holes, which formed around 11 billion years ago. Ultra-massive black holes are the heaviest entities in the cosmos, with some weighing in at millions or even billions of times the mass of the Sun. ![]() The ASTRID cosmological simulation, a massive simulation run on TACC’s Frontera supercomputer, is aiding in the investigation of ultra-massive black holes. The red and yellow lines mark the trajectories of the other two quasars (BH2 and BH3) in the reference frame of BH1, as they spiral into each other and merge. ![]() Shown here is the quasar triplet system centered around the most massive quasar (BH1) and its host galaxy environment on the Astrid simulation. Supercomputer simulations on Frontera reveal the origins of ultra-massive black holes, the most massive objects thought to exist in the entire universe. ![]()
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