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GRB follow-up team

Eng    Rus






Presentations at

Holding conferences:
GRB mini-workshop 2006
GRB workshop 2009

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.

Observations of GRB OTs and their host galaxies

Multiband photometry and spectroscopy of the optical afterglow at different temporal stages, constructing of the multicolor light curves, multiband spectral evolution
Photometry and spectroscopy of the host galaxies, statistics of the observed photometric and spectroscopic properties

Study of features of optical afterglow light curve behaivor from photometric data, determination of distance (redshift z), study of optical afterglow spectra features
Determination of host galaxy parameters: luminosity, starformation rate, + modeling of the host galaxy spectra

SN-like signatures in the spectra and OT light curves or GRB-SN link
A link: GRBs --- massive starforming

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?

Theoretical models of the gamma-ray burst afterglows (X-ray, optical and radio)

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Last update: 15.02.2014