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    supercomputers tagged posts

    Most Detailed–ever Images of Galaxies Revealed

    August 19, 2021, Categories  Uncategorized

    Most detailed-ever images of galaxies revealed
    An image showing what the radio emission looks like in LOFAR’s high resolution, using a galaxy from Morabito et al. (2021). The improved resolution means we can see all the jet details. Credit: L.K. Morabito / DESI Legacy Imaging Surveys

    Astronomers have published the most detailed images seen of galaxies beyond our own yet, revealing their inner workings in unprecedented detail.

    The images were created from data collected by the Low Frequency Array (LOFAR), a network of more than 70,000 small antennae spread across nine European countries. The results come from the team’s years of work, led by Dr. Leah Morabito at Durham University. The team was supported in the UK by the Science and Technology Facilities Council (STFC).

    As well as supporting science exploitation, STFC also fu...

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    Galactic Archaeology

    October 24, 2020, Categories  Astronomy/Space

    ‘Galactic archaeology’ refers to the study of second generation stars to learn about the physical characteristics of the first stars, which disappeared only tens of millions of years after the Big Bang. A computational physics study modeled for the first time faint supernovae of metal-free first stars, yielding carbon-enhanced abundance patterns for star formation. Slice of density, temperature, and carbon abundance for a 13 solar mass progenitor model at times (left-right) 0.41, 15.22, and 29.16 million years after the supernovae explosion in a box with a side 2 kpc. Credit: Chiaki, et al.

    Supercomputers dig into first star fossils...

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    Cosmologists Create Largest Simulation of Galaxy Formation, break their own record

    March 19, 2018, Categories  Astronomy/Space

    This is a composite which combines gas temperature (as the color) and shock mach number (as the brightness). Red indicates 10 million Kelvin gas at the centers of massive galaxy clusters, while bright structures show diffuse gas from the intergalactic medium shock heating at the boundary between cosmic voids and filaments. Credit: Illustris Team

    This is a composite which combines gas temperature (as the color) and shock mach number (as the brightness). Red indicates 10 million Kelvin gas at the centers of massive galaxy clusters, while bright structures show diffuse gas from the intergalactic medium shock heating at the boundary between cosmic voids and filaments. Credit: Illustris Team

    A multi-institutional team gives the cosmology community a world-class simulation to study how the universe formed. Humans have long tried to explain how stars came to light up the night sky. The wide array of theories throughout history have one common (and correct) governing principle that astrophysicists still use to this day: by understanding the stars and their origins, we learn more about where we come from...

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    Simulating Jet Streams and Anticyclones of Jupiter and Saturn

    December 1, 2015, Categories  Astronomy/Space

    Image of Jupiter (L) and Simulation of Jupiter's Deep Atmospheric Flow (R). On the left side is a NASA image of Jupiter taken from Hubble Space Telescope. On the ride side is results of a 3-D simulation of Jupiter's deep atmospheric flow. The image gives global views of the axial vorticity (curl of the fluid velocity) at the outer boundary, the interior boundary, and in a meridional cut. Blue spots are anticyclones, which are predominant on Jupiter and rotate in the direction opposite Earth's cyclonic storms. In the simulation, the anticyclones are ringed by cyclonic filaments, which have also been observed on Jupiter. The image also reveals the vorticity of the zonal shear, which is much weaker than that of vortices. The interior flow is seen in the meridional cut to be strongly shaped by global rotation. Credit: Moritz Heimpel, University of Alberta

    Image of Jupiter (L) and Simulation of Jupiter’s Deep Atmospheric Flow (R). On the left side is a NASA image of Jupiter taken from Hubble Space Telescope. On the ride side is results of a 3-D simulation of Jupiter’s deep atmospheric flow. The image gives global views of the axial vorticity (curl of the fluid velocity) at the outer boundary, the interior boundary, and in a meridional cut. Blue spots are anticyclones, which are predominant on Jupiter and rotate in the direction opposite Earth’s cyclonic storms. In the simulation, the anticyclones are ringed by cyclonic filaments, which have also been observed on Jupiter. The image also reveals the vorticity of the zonal shear, which is much weaker than that of vortices...

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