The missing piece of the universe has been found. Free Technical Library News

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Missing piece of universe found

26.06.2018

American astrophysicists from the University of Colorado at Boulder have discovered the missing amount of baryonic matter in the universe. It is located in the so-called warm-hot intergalactic medium (Warm-Hot Intergalactic Medium, WHIM).

All known objects are composed of ordinary (or baryonic) matter, including white dwarfs and neutron stars. However, within the framework of the standard cosmological model, scientists have predicted that there should be about one and a half times more baryonic matter observed in the Universe than has been found so far.

In the new work, astrophysicists have found that the missing part is actually represented by filaments of oxygen, the temperature of which reaches one million degrees Celsius. These structures are located in intergalactic space, where up to 60 percent of the ordinary matter of the Universe is located, represented by scattered clouds of gas.

Scientists studied the properties of WHIM by observing the 1ES 1553 quasar with the Hubble Space Telescope and the XMM-Newton Space X-ray Telescope. 1ES 1553 is a supermassive black hole at the center of a galaxy that is ejecting large volumes of gas. Astrophysicists have discovered traces of a dense gas of highly ionized oxygen atoms that lie between the quasar and the solar system. In terms of the volume of the visible universe, this gas made up 30 percent of baryonic matter.

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