An international team
of astronomer’s joint data from the observatory NASA's Chandra X-ray, space
observatory ESA's XMM-Newton and Japan's Suzaku. From these data, scientists
have unspecified that our galaxy is surrounded by a halo of hot gas that
extends in all directions for hundreds of thousands of light years. In this
study, the researchers want to understand why, in the early galaxies gone more
than half of ordinary matter, without leaving a trace.
Protons and neutrons
are classified as "baryons" - a type of subatomic particles that
interact strongly to form the nuclei of atoms. Taken together, the baryons are
almost all ordinary matter in our universe.
Astronomers have
discovered that galaxies lose more than half of its atoms in comparison with
the length of time, when they were formed. This whole matter itself simply
could not divide, so where did it go? It is a known and very old question,
which is based on the "missing baryons."
Now, a team of
astronomers led by Dr. Anjali Gupta may have found the answer, at least for our
galaxy. Baryons, says Gupta, did not disappear from the Milky Way. Rather, they
have turned to the substance; the total mass is 60 billion times the mass of
the sun. These agents are all over the galactic disk - halo of hot gas
extending around us for hundreds of thousands of light years, reaching a
temperature of millions of degrees, with a low density so that if they were in
other galaxies, we could not find them.
We already knew that
the Milky Way and other galaxies are in the warm gas with temperatures that
reach up to a million ° C (1. 8 million ° F). More recently, scientists have
discovered the presence of even more hot gas, but now they have found that
these newly discovered "hot spots" are much more massive than the
warm gas, which we already knew - with so great mass, which may well contain
all the missing baryons.
"A reasonable
approach, our findings have opened a huge reservoir of hot gas around the Milky
Way," - said co-Smith Mathur from the "Ohio State University (Ohio
State University) in Columbus.”It extends for several hundred thousand
light-years around the Milky Way, and may extend further into the surrounding
group of local galaxies. In any case, its mass is incredibly huge. "
Despite the fact that
there are still some gaps to be addressed in the near future, this discovery
helps scientists better understand the formation of galaxies, and provides
solutions to long-standing problems in astrophysics.
Full review of the
study was published in the Astrophysical Journal.
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