A new analysis of the sky was finally confirmed where half of the visible problems in the universe are hiding.
In the space around the galaxy, it lurks like a huge, invisible cloud of ionized hydrogen. Normally this is not visible, but a large international team of astronomers and astrophysicists have developed a technique to reveal their hiding place in the darkness of the stars.
Research Program Make sure that the lack of material in the universe takes the form of an intergalactic mist of hydrogen that has been expelled from the galaxy’s active core than previously thought.
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“I think we’ll retrieve all the missing gas when we leave the galaxy further.” Astronomer Boryana Hajiska says University of California, Berkeley, Lawrence Berkeley National Laboratory.
“To be more accurate, you need to carefully analyze the simulations, but I haven’t done this. I want to do some careful work.”
Normal or baryon material accounts for approximately 5% of the universe’s material energy distribution. The rest is dark matter (27%) and dark energy (68%). Dark matter and dark energy are completely different things, but the mystery of the missing valionic material has been plaguing scientists for decades.
The problem is that you don’t know where most of it is. Hydrogen accounts for about 90% of the universe By atomsand 73% massTherefore, the majority of the missing baryon material is hydrogen. Scientists estimate that more than 50% of the universe’s hydrogen has been left behind.
Hydrogen in the universe is ionized by radiation and can cause it It shines faintlyHowever, in the space between the galaxies, the gas is too twitching and too faint of a glow. This makes it easy to detect.
However, there are multiple ways to find invisible hydrogen clouds. One way we are gaining traction is to see the changes in light behind it, the microwave background of the universe, the fossilized “first light” of the universe permeates the universe.
“The background of the microwaves of the universe is on the back of everything you see in space. It’s the edge of the universe that can be observed.” Cosmicologist Simone Ferraro says Lawrence Berkeley National Laboratory. “So you can use it as a backlight and see where the gas is.”
This light can light and darken as it passes through diffuse clouds of ionized hydrogen, scatters electrons in the gas. This is called kinesiology Sunyaev-Zel’dovich Effect. As you can probably imagine, the microwave background in the universe is really faint and difficult to see.
Therefore, solutions are stacked. Take lots of observations and place them on top of each other in a stack to highlight some really faint features. Researchers did this with over a million shining red galaxies within the radius of the Milky Way of 8 billion light years.
Their results showed that the hydrogen halos enveloped in these galaxies were much larger than we thought. It also offers the appetizing potential of a much larger halo than could be detected in this study.
“The measurements certainly match finding all the gases.” Ferraro says.
However, as is very common in astronomy, this finding also raises new questions. Hydrogen halo You will be fed Both are active stages of gas from outside the galaxy, falling over it, and superstar black holes at the heart of the Galaxy.
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When a black hole feeds at high speed, its magnetic field fires huge material that can blow millions of light years into intergalactic space. A powerful wind It explodes outward in any direction, pushing in gas within the galaxy, reducing star formation (as stars form from the gas).
The discovery of larger halos than expected suggests that black hole activity is episodes and can turn on/off. This is consistent with other interesting observations Black Hole It suddenly appears to be on fire in life. This is information related to models of galaxy evolution.
This is just part of the puzzle. Other attempts to map the missing baryons of the universe show that some of them are bound by the dark matter filaments that form the cosmic web, connecting galaxies across vast distances. The team’s work gave astronomers a new way to find hydrogen. Now they just need to put together the pieces together.
“This job opens the door for an exciting new research line.” They write on paper.
“Understanding the relationship between gas and dark matter not only supports future cosmological analysis, but also helps to understand the formation and evolution of galaxies. This paper adds an integral part to a series of works aimed at unraveling the complexity of space gases in an age of large-scale space research.”
The study was submitted Physical Review Letterand is available arxiv.
