The best candidate for dark matter is cosmic plasma

Abstract: According to the ΛCDM cosmological model, dark matter has a very long history
and remains a puzzle. X-ray observations suggest that the best candidate of dark matter is
cosmic plasma. It is only because in the ΛCDM cosmological model, the mass of the cosmic
plasma is limited to less than 5% of the critical mass of the universe (i.e. Ωb < 0:05) in
order to guarantee the conjecture that the observed CMB is a remnant of the Big Bang with a
perfect blackbody spectrum, that this X-ray observational evidence is unreasonably ignored.
If astrophysicists could discard the unreasonable assumption: i.e. Ωb < 0:05, then the dark
matter puzzle would be easy to solve. Dark matter is actually cosmic plasma