Holding conferences:
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Astronomy of GRB with the 6-m telescope
Our study of GRB fields in optical range efforts to shed light on
the progenitor problem and it is naturally splitting into two directions.
The first one is study of GRB OT via follow-up observations, while the
second way is investigation of GRB host galaxies.
Below we present a sequential scheme of our understanding of the research
strategy . The first stage consists in observational data acquision,
the second one yields estimates of GRB OT characteristics and its host
galaxy parameters. They are followed by interpretation of the data obtained,
consideration of proposed hypotheses and search for possible links.
Combining this with theoretical models of gamma-ray bursts afterglows
we try to answer the main questions given in bold.
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Observations of GRB OTs and their host galaxies
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Multiband photometry and spectroscopy of the optical afterglow at different
temporal stages, constructing of the multicolor light curves,
multiband spectral evolution
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Photometry and spectroscopy of the host galaxies, statistics of the
observed photometric and spectroscopic properties
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Study of features of optical afterglow light curve behaivor from photometric
data, determination of distance (redshift z), study of optical afterglow
spectra features
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Determination of host galaxy parameters: luminosity, starformation rate,
+ modeling of the host galaxy spectra
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SN-like signatures in the spectra and OT light curves or GRB-SN link
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A link: GRBs --- massive starforming
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Do GRB hosts differ from field galaxies? What kind of objects are
progenitors of the gamma-ray bursts?
What are mechanisms of the optical afterglow?
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Theoretical models of the gamma-ray burst afterglows
(X-ray, optical and radio)
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