Magnetic fields and thermodynamical conditions at photospheric layers of X17.2/4B solar flare of 28 October 2003
Journal: Journal of Physical Studies
Year: 2017

We present the magnetic field measurements and data of semi-empirical modeling for the exclusively powerful solar flare of 28 October 2003 of X17.2/4B class, which was in active region NOAA 0486. Observations were made with the Echelle spectrograph of the horizontal solar at telescope the Astronomical Observatory of the Taras Shevchenko National University of Kyiv. Our data relate to the peak phase of the flare and to a place of the photosphere outside sunspots.