ACT Collaboration; ESA/Planck Collaboration
He graduated 13.4 billion years ago and was the first light to emerge after Big Bang. Now, after 5 years of observation, it was finally revealed.
The Cosmological Telescope of Atacama (ACT) compiled the more detailed map we ever saw from the Cosmic Microwave background-the first light to emerge in the universe after Big Bang.
“We are seeing the first steps for creating the first stars and galaxies,” he says to Suzanne Staggs, the University of Princeton, USA.
“And we are not just seeing the light and the dark, we are seeing the high resolution light polarization. This is a factor that distinguishes Planck’s ACT and other previous telescopes, ”he says.
It is the oldest light ever, but only formed about 380000 years after the Big Bang. It was then that these particles began to combine in neutral gas, mostly hydrogen, in a phenomenon known as the Time of recombination.
After the free particles were grouped into atoms, the light was able to spread, spread throughout the universe. This first light is Cosmic Background Radiation (CMB).
It was only 5 years of observation after it was possible to reveal this light, since, having formed about 13.4 billion years ago, It is now extremely filed.
The findings were presented in detail in three pre-impressive articles published in ARXIV and on the online page of
ACT’s latest data publication also shows the intensity and polarization of CMB – the degree of rotation of a light wave.
“Before, we could see where things were, but now we see how they are moving,” says Staggs. “As if we used the tides to infer the presence of the moon, The movement recorded by the polarization of light tells us how strong the strength of gravity in different parts of space was. ”
The new CMB map gave a hubble constant of 69.9 kilometers per second by Megaparsec. It is one of the most rigorous measurements to date, explains Science Alert.
“We can see through cosmic history“Comments to the astrophysicist Jo Dunkley at Princeton University.” Since our Milky Way, passing through distant galaxies that host vast black holes and huge galaxies of galaxies to the time of childhood. “
