Study of optical transients of GRBs by rapid observations by robotic telescopes.
Study of the characteristics of the environment of the origin of cosmic
gamma-ray bursts, based on the study of the colour indices of their optical
afterglows and their time evolution. This considers a new method
of analysis of cosmic gamma-ray bursts which confirmed the destruction of the
dust by the initial energetic flash. This method also enables to resolve the
optical afterglows from other types of optical transients. Study of
the optical transients as a direct optical emission of gamma-ray bursts and
the determination of the relevant limits, based on the analyses of time
correlated data from the meteor network EN and other archives of astronomic
plates. In the international context, the data from the meteor network represent
an unique contribution to this field because they cover the sky area of the
bursts exactly at the time of its occurrence or even prior to it. This enabled
us to derive valuable limits for the direct optical emission and pre-emission of
gamma-ray bursts and to compare them with the luminosity predicted by theoretical
models. Another results were obtained by analysis of extensive archives of
photographic plates at the observatories in Edinburgh and Sonneberg.
Study of magnetic reconnections in context of GRB models. Physical analyses
of GRB light curves and spectra.