Observations of gamma-ray bursts and a supernovae search at the robotic telescope MASTER

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Abstract:

We present here the results of observations made during 2005-2006 using the robotic telescope MASTER. The world's first observations of the optical emission of gamma-ray bursts GRB050824 and GRB060926 are shown. Our data combined with later observations give the law of brightness as proportional to t0.55±0.05 for GRB050824. We discovered an optical flare for GRB060926 at about 500-700 s. The power law spectral index (F∝ E-) is equal to =0.7±0.2. During the sky survey we have imaged more than 90% of the observable sky. Also we discovered three supernovae (SNs): SN2005bv of type Ia (this is the first SN discovered in Russia), SN2005ee (which is one of the brightest type II SN stars) and SN2006ak (type Ia).

Keywords: Dark energy; Gamma-ray bursts; Supernovae; Telescope robot

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/10556790701300462

Affiliations: 1: Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospekt, Moscow, Russia,Department of Physics, Moscow State University, Moscow, Russia 2: Sternberg Astronomical Institute, Moscow State University, Universitetskij Prospekt, Moscow, Russia 3: Department of Physics, Moscow State University, Moscow, Russia

Publication date: February 1, 2007

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