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Information × Registration Number 0302U005226, 0101U002778 , R & D reports Title Solar activity monitoring. Solar photosphere and chromosphere research popup.stage_title Служба Сонця. Дослідження Сонячної хромосфери в лінії D3HeI Head Akimov L., Registration Date 22-04-2002 Organization Kharkov National University named after V.N.Karazin popup.description2 The Sun is the studied object. It is intended to take the new data on solar activity, to investigate the the characteristics of 23-th activity cycle, to study the He-emitting mechanism at chromospheric base, to take the data on morphology and dynamics of individual phenomena from observations at He1 1083 nm line. The solar activity H(alpha)-line observations are carried following the International Solar Service programs. The 23-th cycle solar activity progress is analysed according to flare indices at optical and X-ray. It is shown that the solar north semisphere is more active in during growth phase, and east/west difference is unsignificance. It is found that sometimes local maximuma of both indexes are not coincided with the correlation coefficient between their mean month values about 80%. From chromospher surface brighness maps at D3 He1 line constructed from two eclipce data the He-chromosphere structure pecularities and intensity division nature are studied on different solar active cycle phases. It is shown for X-ray coronal radiance with wave's length < 6 nm the posibility to increase up to temperature minimum. 2N/M5.5 27.08.99 solar flare and eruptive prominance (EP) 18.09.95 morphologic and energic evolutions are studied from He1 1083 nm-image sets. He-images of the phenomena are compared with magnetic field maps, with soft X-ray images and H(alpha)-ones. The most places of increased helium emitting in both flare and prominence are concerned with coronal excited loops. It is suggested the coronal emission is important for helium exitation in these active phenomena. Product Description popup.authors popup.nrat_date 2020-04-02 Close