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    Improved Model for the Mass Distribution of Galaxy Cluster SMACS J0723.3−7327 based on Webb Telescope image

    August 1, 2022, Categories  Astronomy/Space

    James Webb Telescope reveals highly distant galaxies
    This JWST image shows the galaxy cluster SMACS J0723.3−7327 with a large number of lensed background galaxies. The white bar at the bottom corresponds to 50 arcsec, which is approximately the maximum size of Jupiter observed from Earth. Credit: NASA, ESA, CSA and STScI

    Using the first science image released by the James Webb Space Telescope (JWST) this month, an international team of scientists with significant contribution from the Technical University of Munich (TUM) has built an improved model for the mass distribution of the galaxy cluster SMACS J0723.3−7327. Acting as a so-called gravitational lens, the foreground galaxy cluster produces both multiple images of background galaxies and magnifies these images...

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