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    ATERUI II tagged posts

    Gas Streamers Feed Triple Baby Stars

    August 8, 2023, Categories  Astronomy/Space

    Gas distribution around the trinary protostars IRAS 04239+2436, (left) ALMA observations of SO emissions, and (right) as reproduced by the numerical simulation on the supercomputer ATERUI. In the left panel, protostars A and B, shown in blue, indicate the radio waves from the dust around the protostars. Within protostar A, two unresolved protostars are thought to exist. In the right panel, the locations of the three protostars are shown by the blue crosses. (Credit: ALMA (ESO/NAOJ/NRAO), J.-E. Lee et al.) 

    New observations and simulations of three spiral arms of gas feeding material to three protostars forming in a trinary system have clarified the formation of multi-star systems.

    Most stars with a mass similar to the Sun form in multi-star systems together with other stars...

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    Largest Virtual Universe Free for Anyone to Explore

    September 14, 2021, Categories  Astronomy/Space

    The distribution of dark matter in a snapshot from Uchuu. The images show the dark matter halo of the largest galaxy cluster formed in the simulation at different magnifications. (Credit: Tomoaki Ishiyama) 

    An international team of researchers has generated an entire virtual UNIVERSE, and made it freely available on the cloud to everyone.

    Uchuu (meaning “Outer Space” in Japanese) is the largest and most realistic simulation of the Universe to date. The Uchuu simulation consists of 2.1 trillion particles in a computational cube an unprecedented 9.63 billion light-years to a side. For comparison, that’s about three-quarters the distance between Earth and the most distant observed galaxies...

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    Observation, Simulation, and AI join forces to reveal a Clear Universe

    July 3, 2021, Categories  Astronomy/Space

    Artist’s visualization of this research. Using AI driven data analysis to peel back the noise and find the actual shape of the Universe. (Credit: The Institute of Statistical Mathematics)

    Japanese astronomers have developed a new artificial intelligence (AI) technique to remove noise in astronomical data due to random variations in galaxy shapes. After extensive training and testing on large mock data created by supercomputer simulations, they then applied this new tool to actual data from Japan’s Subaru Telescope and found that the mass distribution derived from using this method is consistent with the currently accepted models of the Universe. This is a powerful new tool for analyzing big data from current and planned astronomy surveys.

    Wide area survey data can be used to study...

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