Dark matter: new discoveries and problems of existing models

Recent research by astrophysicists has led to the discovery of the massive galaxy NGC 1277, which shows no evidence of dark matter. This is a serious problem for our existing cosmological models, which assume that dark matter accounts for about 85% of the mass of the Universe. This result necessitates a revision and refinement of our understanding of the formation and evolution of the cosmos.

According to the Standard Model of cosmology, dark matter played an important role in the formation of the first stars and galaxies shortly after the Big Bang. Its halos attracted neutral hydrogen gas into rotating disks, which contributed to the formation of the first stars and galaxies. Today, dark matter is a major component of all massive galaxies and is manifested in their rotation curves, gravitational lenses, and interactions with surrounding stars and the intergalactic medium.

However, in their study of the galaxy NGC 1277, astronomers found only a distribution of stars, with no evidence of dark matter. The researchers concluded that dark matter within this galaxy cannot account for more than 5% of its mass within the observed radius. This result is inconsistent with accepted cosmological models, which suggest that dark matter plays a fundamental role in the formation and evolution of the cosmos.

A team of astronomers from the Institute of Astrophysics of the Canary Islands (IAC), led by Sébastien Comeron, investigated the galaxy NGC 1277 using an integral field spectrograph. The measurements allowed them to determine the mass distribution inside the galaxy within a radius of about 20,000 light-years. This galaxy has been described by the team as a prototype “relic galaxy” that does not interact with neighboring galaxies. Such galaxies are thought to be remnants of giant galaxies that formed shortly after the Big Bang.

This discovery raises the need to revise existing cosmological models and search for new explanations for the absence of dark matter in the galaxy NGC 1277. Perhaps this indicates that our ideas about the role of dark matter in the formation and evolution of the cosmos are not fully consistent with reality.

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