The “today temperature of keV sterile neutrino” is a highly speculative and unresolved question in physics. While there is evidence suggesting the existence of sterile neutrinos with masses in the keV range, their properties, including their temperature, remain unknown. Current experimental limits on the production and decay of keV sterile neutrinos place constraints on their abundance and temperature. Ongoing research aims to refine these limits and potentially determine the temperature of keV sterile neutrinos, providing insights into their behavior and implications for physics beyond the Standard Model.
