Astrophysicists have come up with a way to look at the first stars through the dust of the early universe

Astrophysicists have come up with a way to look at the first stars through the dust of the early uni

Astrophysics suggest analysing the radioline of neutral hydrogen to search for and study objects of the early universe. The methodology proposed in the article in Nature Astronomy will allow astronomers to observe the earliest stars by interacting with hydrogen clouds.

Scientists use Bayesian statistics to detect a cosmological signal in the presence of interference from the telescope and general noise from the sky, and the signal that astrophysicists detect is expected to be about 100,000 times weaker than other radio signals, including those coming from our galaxy.

The authors point out that interference with the radio telescope distorts the signal and can completely conceal information of interest, so for their research they designed a radio telescope that collects data specifically for primary radiation analysis.

Our method together analyses data with multiple antennas and a wider range of frequencies than the equivalent of modern tools, and this approach will provide us with the necessary information for our Bayesian analysis of data.

The telescope is currently being completed at the Karu Radio Repository in South Africa, a location chosen because of the excellent conditions for radio observation outside the sky, which is far from man-made radio frequency interference, such as television and FM radio signals.

When the first stars were formed, the universe was empty and consisted mainly of hydrogen and helium, explained by researchers. Under gravity, these elements joined together by launching a nuclear synthesis and forming the first stars. But these stars were surrounded by the clouds of neutral hydrogen, which very well absorb light and interfere with research.

The new method will help you look inside these systems and learn more about the evolution of the universe, scientists believe.

Image on the cover: NASA, ESA, and M. Davis