Formation of galaxies in the early universe there is no answerque contempla la existence de la materia oscura. Equip research, provide US space telescope data James Webbha reutado esta version y ha retumado otra hypothesis.
El modelo estándar preecía que El Webb would see faint signals from small and primitive galaxiesbut there is a public studio The Astrophysical Journalthe data do not confirm that dark matter contributed to the clustering of the first stars and galaxies.
In contrast, las galaxies can be an alternative to large antiguas and brillantes, de la gravity. This contradicts astronomers' understanding of the primordial universeAn investigation led by Case Western Reserve University shows, de United States of America. “What the dark matter theory predicts is not what we see,” said Stacy McGaugh, one of the co-authors of the study.
The study compares the Modified Newtonian Dynamics (MOND) system, formulated in 1998, with the Lambda-CDM (LCDM) model to explain the formation of the first galaxies. LCDM assumes the existence of cold dark matter y speculate that galaxies form as a result of the gradual accretion of matter from small to large structures due to the additional gravity that provides the mass of dark matter.
Por su parte, la MOND, en la que se apoya el nuevo studio, considera que, en lugar de la materia oscura, seria la gravity modificada quien podria haber despegnado un papel en la formation from the first galaxies. Furthermore, with this system, the creation of structures in the early universe would be much faster than LCDM expected.
“Los Astronomers inventarón la materia oscura Evidently for Universo primitivo muy liso a las grandes galaxias Specialists continue their activities,” said McGaugh.
Galaxies Appreciated by James Webb Habría sido capáz de ver los pequeños precursores de las galaxias en forma de una luz duration. “We expected that all the large galaxies we see in the nearby universe will be formed from these small fragments,” the scientist explained. The sin embargo, an earlier-than-ever telescope observation of the universe's evolution, signals bigger and brighter than expected.
La MOND, con la que no existe la materia oscura, postula que The mass that becomes a galaxy accumulates quickly and initially expanding outward along with the rest of the universe. Then, la fuerza gravitoria frena la expansion y luego la invierte, de modo que la material collapsing in on itself to form a galaxy. These structures observed by Webb were predicted by MOND more than 25 years ago.
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