Scientists Find Dark Matter From 1.5 Billion Years After The Universe's Beginning
Particles of dark matter keep giving us signals and astronomers also claim to have received something related to dark matter. Dark matter is a puzzle itself.
Recently, astronomers have observed the effects of dark matter at the edge of the observable universe, when our universe was only 1.5 billion years old.
It neither emits light nor absorbs light, but its gravitational effect does affect light. The clumps of dark matter form the gravitational lensing that is able to deflect or focus light.
Astronomers have measured dark matter found in galaxy clusters through this same effect. We can also see this lensing effect in James Webb's deep field images.
The light from extremely distant galaxies is distorted by the mass of nearby galaxies, Astronomers can map and calculate the distribution of dark matter in those nearby galaxies using this nature of light.
But, recent studies show the galaxies to be so far away that there are actually no more distant galaxies.
So none is bright enough that we can see their lens effect. Therefore, the team of researchers used light from the Cosmic Microwave Background (CMB).
The team used data from the Subaru Hyper Suprime-Cam Survey to map dark matter and identify galaxies 1.5 million faint and distant.
Next, the researchers used data from the Planck satellite to see how the CMB light was deflected. This enabled researchers to map dark matter in the early universe.
This is the most distant measurement of dark matter ever taken, and it opens up a potential crack in our current model of the universe.
According to the Standard Universe Model, also known as the LCDM model, dark energy is leading the expansion of the universe, tearing galaxies apart.
Galaxies collide with each other due to the gravitational effect of dark matter. According to the LCDM, the scale at which we observe fluctuations in the cosmic background governs the scale at which galaxies gather together.
This gives us evidence to estimate how dense a cluster of galaxies must have been in the early universe.
The uncertainty of the team's measurements means that their result is not conclusive.
It is possible that they only measured the clumping scale. But if this is correct, it suggests that 12 billion years ago the laws of the universe were slightly different.
They could be on to something, with observations showing strain in the rate of cosmic expansion. There are many possibilities. But the biggest breakthrough of this work is that we now have real data.
It's a big first step, and as we get more data from telescopes like the James Webb Space Telescope and the Vera Rubin Observatory, we should be able to solve this mystery, and finally learn whether cosmic laws are really about darkness. and were far apart.
Post a Comment