TY CONF TI Multi-wavelength observations of the impulsive C2.8 class flare producing photospheric impact at the penumbra region of the leading sunspot in NOAA 13256 KW Sun: solar flare KW radio emission KW X-ray emission KW photospheric perturbations KW magnetic fields JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Koynash, G.. AU Sharykin, I.. AU Zimovets, I.. AU Ivanov, E.. AU Kiselev, V.. AU Nizamov, B.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences