TY CONF TI Investigation of the dynamics of the magnetic field and vertical electric current during the precursors of the M6.5 class solar flare of June 22, 2015 using vector 135-second HMI magnetograms KW Sun: solar flares; precursors; magnetic field; electric current JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Sharykin, I.. AU Zimovets, I.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences