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pinball1970
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- TL;DR
- Data from Chandra X ray telescope, show ΛCDM tension with El Gordo large galaxy cluster collision.
The article is here https://phys.org/news/2023-09-titanic-galaxy-cluster-collision-early.html
"The results of our previous study were questioned by some scientists once an updated mass estimate for El Gordo was published and came in slightly lower. This does reduce the tension with ΛCDM, but it is still highly significant for any plausible collision velocity. Hundreds of detailed simulations show that El Gordo cannot look like the photos with a much slower collision velocity that could plausibly arise in ΛCDM."
Paper here https://iopscience.iop.org/article/10.3847/1538-4357/ace62a
Previous paper here from 2020 with a discussion of the bullet cluster and MOND (4.3)
Previous data from Webb on the same issue. https://iopscience.iop.org/article/10.3847/2041-8213/ac9a50
Info on Chandra https://en.m.wikipedia.org/wiki/Chandra_X-ray_Observatory
"The results of our previous study were questioned by some scientists once an updated mass estimate for El Gordo was published and came in slightly lower. This does reduce the tension with ΛCDM, but it is still highly significant for any plausible collision velocity. Hundreds of detailed simulations show that El Gordo cannot look like the photos with a much slower collision velocity that could plausibly arise in ΛCDM."
Paper here https://iopscience.iop.org/article/10.3847/1538-4357/ace62a
Previous paper here from 2020 with a discussion of the bullet cluster and MOND (4.3)
Previous data from Webb on the same issue. https://iopscience.iop.org/article/10.3847/2041-8213/ac9a50
Info on Chandra https://en.m.wikipedia.org/wiki/Chandra_X-ray_Observatory