Prompt, early and afterglow optical observations of five γ-ray bursts: GRB 100901A, GRB 100902A, GRB 100905A, GRB 100906A and GRB 101020A
- Gorbovskoy, E. S.
- Lipunova, G. V.
- Lipunov, V. M.
- Kornilov, V. G.
- Belinski, A. A.
- Shatskiy, N. I.
- Tyurina, N. V.
- Kuvshinov, D. A.
- Balanutsa, P. V.
- Chazov, V. V.
- Kuznetsov, A.
- Zimnukhov, D. S.
- Kornilov, M. V.
- Sankovich, A. V.
- Krylov, A.
- Ivanov, K. I.
- Chvalaev, O.
- Poleschuk, V. A.
- Konstantinov, E. N.
- Gress, O. A.
- Yazev, S. A.
- Budnev, N. M.
- Krushinski, V. V.
- Zalozhnich, I. S.
- Popov, A. A.
- Tlatov, A. G.
- Parhomenko, A. V.
- Dormidontov, D. V.
- Senik, V.
- Yurkov, V. V.
- Sergienko, Yu. P.
- Varda, D.
- Kudelina, I. P.
- Castro-Tirado, A. J.
- Gorosabel, J.
- Sánchez-Ramírez, R.
- Jelinek, M.
- Tello, J. C.
DOIAbstract
We present the results of the prompt, early and afterglow optical observations of five γ-ray bursts (GRBs): GRB 100901A, GRB 100902A, GRB 100905A, GRB 100906A and GRB 101020A. These observations were made with the Mobile Astronomical System of TElescope-Robots in Russia (MASTER-II Net), the 1.5-m telescope of the Sierra Nevada Observatory and the 2.56-m Nordic Optical Telescope. For two sources, GRB 100901A and GRB 100906A, we detected optical counterparts and obtained light curves starting before the cessation of γ-ray emission, at 113 and 48 s after the trigger, respectively. Observations of GRB 100906A were conducted in two polarizing filters. Observations of the other three bursts gave the upper limits on the optical flux; their propert...
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