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Journal of Physical Studies 12(1), Article 1901 [8 pages] (2008)
DOI: https://doi.org/10.30970/jps.12.1901 POWERFUL PROTON SOLAR FLARE 4B/X17.2 ON OCT.28.2003 AND ITS INFLUENCE ON THE MAGNETOSPHERE OF THE EARTHI. S. Laba
Ivan Franko National University of Lviv,
Astronomical Observatory, |
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Using observational data obtained from the astronomic observatory of Lviv Ivan Franko National University, magnetic observatory ‟Lviv”, and GOES-10, -11, -12 satellites about the power proton 4B/X 17.2 flare from Oct. 28 2003, the evolution of flare, electromagnetic and corpuscular radiation has been studied. This flare was found to hare had a two-stage evolution. Separate flare knots would appear and disappear with slow and slight changes in their intensity (exsept one knot), reaching minimal values 15-20 minutes prior to second stage. The emerging of a new magnetic flux at the active region created sufficient conditions towards the end of the first stage for carrying out the second flare stage-strong and rapid growth of intensity and area of all flare knots. The two-ribbon flare was created in the maximum of radiation. The exceptionally powerful proton flare 4B/X17.2 at Oct. 28 2003 has released great energy ($≈ 10^{32}$\,erg) as proton motion, thermal energy and the energy of radiation. One may define that either the power of (corpuscular and electromagnetic) radiation, or its localization near the central solar meridian made this flare exeptionally highly geoeffective. Flare radiation produced a sudden ionospheric disturbance accompanied by intensive and reaching middle latitudes Polar lights.
PACS number(s): 97.10.Ex