12/29/2023 0 Comments James webb deep field![]() ("Redshift" refers to the stretching of the wavelength of light that occurs as the universe expands between a distant object and the viewer. The current most distant confirmed galaxy is a faraway object known as GN-z11, which has a redshift of 11.09, meaning we see it as it existed 13.4 billion years ago, just 400 million years after the Big Bang. "Our models not only describe the mass, but we can also use them to describe the magnification of these lensed images," Pascale told. (Image credit: NASA/ESA/CSA/STScI/Pascale et al.) ![]() One of the new papers, from a team led by Guillaume Mahler of Durham University, concluded that most of the mass is centered on the brightest, most massive galaxy in the cluster.Įxamples of some of the lensed background galaxies in Webb's image of SMACS J0723. Whatever the final tally, these lensed images allow scientists to finetune a map of how matter - both visible and dark - is distributed in the SMACS J0723 cluster, and in turn model the shape of the lens. Another team, led by Gabriel Caminha of the Max Planck Institute for Astrophysics in Germany, counted 27 new lensed images. Gravitational lenses can create multiple images of the same galaxy, so these 42 images represent 19 individual galaxies. But Webb takes the hunt to a whole new level.įrye's team, which was led by graduate student Massimo Pascale at the University of California, Berkeley, discovered 42 new lensed images in the background of the new deep-field image. Previous surveys by the Hubble Space Telescope and the retired Herschel Space Observatory had found a handful of lensed images of background galaxies in their SMACS J0723 observations. Galaxy clusters are particularly efficient lenses because they pack a huge amount of mass (in the case of SMACS J0723, about 100 trillion times the mass of the sun) into a relatively compact volume with a diameter of about 3 to 5 million light-years across. Gravitational lensing is a phenomenon in which a very massive object's gravity warps space into a shape analogous to an optical lens, resulting in light from whatever is behind the lens being distorted and magnified in brightness. These galaxies should not have had time to form,” Erica Nelson, co-author of the new research and assistant professor of astrophysics at CU Boulder was quoted as saying by ."It was beautifully chosen because it was a relatively unknown target," she said. “You just don’t expect the early universe to be able to organise itself that quickly. Considering the lack of any prior sighting or details regarding the galaxies, astronomers are having a tough time decoding the new findings. These galaxies seem to have been created during the universe’s early years.Īs reported by, the six galaxies are as big as the Milky Way and comprise mature red stars that seem scattered across deep field images captured by the James Webb Space Telescope in its early observations. Precisely, the team has found six potential galaxies that are so massive that they are not categorised in any cosmological theory. ![]() ![]() A recent study conducted by an international team of astrophysicists has found numerous mysterious objects that were hidden away in the images taken by the James Webb Space Telescope. ![]()
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