Science

Dark matter of 12 billion years ago, observed in the Universe

Dark matter of 12 billion years ago, observed in the Universe
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One of the few things we know about dark matter is based on the glow of the galaxies that exist around it. Now a group of astronomers have found a different way to shed light on the distant darkness. Possible through the study of shadowy masses of dark matter that distort the glow of the cosmos. Its name is dark matter because it tells us nothing about its true nature.

It could be some kind of particle-like mass with few properties, not unlike a neutrino. Or more simply a reflection misunderstood by humanity. There is no complete theory on how to accurately measure the appearance of dark matter halos. Perhaps there is a way and that is to use the collective mass that distorts the starlight passing through the surrounding space.

According to Nagoya University astrophysicist Hironao Miyatake and colleagues, another existing mode is light called the cosmic microwave background. For example, the echo of light left by the universe 300 thousand years ago and which is now present in the form of weak radiation. This is the first time this method has been used to estimate distant galaxies. It is also used to analyze the distribution of dark matter halos.

Hironao and the team also fossilized on star-forming objects called Lyman-break galaxies . Using a sample of nearly 1.5 million of these objects, clear results were obtained. These relate to a halo mass typical of galaxies close to 12 billion years in the past. Here such responses could allow the revisitation of existing models of how the elements formed the first galaxies. Furthermore, they could also explain the origins of dark matter . In short, the story about the birth of the Universe.

  • Scientists Glimpse The Earliest Dark Matter Ever Observed in The Universe (sciencealert.com)
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