The missing case of the universe may finally be found.
Astronomers think regularly – that is, the stuff that is not dark matter – Makes about 15% of the total mass of the universe. However, over the years, researchers have participated in a problem when trying to determine: they are not able to find almost half of the “normal” case in stars, galaxies and other space structures that we can see.
But now, a large, international team of researchers has found that spreading around most galaxies hydrogen gas is much more comprehensive than scientists already thought – so broad, in fact, that it may be responsible for most of the missing cases of the universe, the team says.
“Measurements surely suit all (missing) gas,” study co-writer Simon ferroroBerkeley, an astronomer at the University of California, said statementStudy is currently available Preprint server arxiv And the journal is going through a peer review for publication in physical review letters.
Hunting for missing case
To investigate them, researchers used data of Dark Energy Spectroscopic Instrument (DESI) at the Kit Peak National Observatory in Arizona, as well as from Atakama Cosmology Telescope in Chile.
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Using desi comments, the team stole images of about 7 million galaxies to measure unconscious holos of ionized hydrogen gas on the sides of the galaxies. These hello are usually very unconscious to be seen in normal ways. So instead, the team measured Gentle explosion It is prevalent throughout the universe.
The team also discovered that the clouds of the ionized hydrogen formed ghostly, an invisible filament among the galaxies. If it connects most galaxies in the universe, this cosmic web will easily spread sufficiently to the pre -determined case.
Black hole on duty
The search can also change what we know Black hole Behaviour Scientists initially thought that supermasive Black Hole in the hearts of most galaxies only spewed gas jets in their life cycles. But such broad spread gas indicates the presence of clouds that these black holes probably become active more often than before.
“One of the hypothesis is that (black hole) is sometimes turned on and closed, called the duty cycle,” first study writer Boriana HadzizkaIn a statement, a statement at the University of California, Berkeley, said.
The next step will have to include new measurements in the existing cosmological models. Hadziska said, “There is a large number of people interested in using our measurements to include this gas.”
