Early polarization observations of the optical emission of gamma-ray bursts: GRB150301B and GRB150413A

We report early optical linear polarization observations of two gamma-ray bursts made with the MASTER robotic telescope network. We found the minimum polar- ization for GRB150301B to be 8% at the beginning of the initial stage, whereas we detected no polarization for GRB150413A either at the rising...

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Veröffentlicht in:arXiv.org 2015-11
Hauptverfasser: Gorbovskoy, E S, Lipunov, V M, Buckley, D, Kornilov, V G, Balanutsa, P V, Tyurina, N V, Kuznetsov, A S, Kuvshinov, D A, Gorbunov, I A, Vlasenko, D, Popova, E, Chazov, V V, Potter, S, Kotze, M, Kniazev, A, Gress, O A, Budnev, N M, Ivanov, K I, Yazev, S A, Tlatov, A G, Senik, V A, Dormidontov, D V, Parhomenko, A V, Krushinski, V V, Zalozhnich, I S, Castro-Tirado, R Alberto, Sanchez-Ramrez, R, Sergienko, Yu P, Gabovich, A, Yurkov, V V, Levato, H, Saffe, C, Mallamaci, C, Lopez, C, Podest, F
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Sprache:eng
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Zusammenfassung:We report early optical linear polarization observations of two gamma-ray bursts made with the MASTER robotic telescope network. We found the minimum polar- ization for GRB150301B to be 8% at the beginning of the initial stage, whereas we detected no polarization for GRB150413A either at the rising branch or after the burst reached the power-law afterglow stage. This is the earliest measurement of the polarization (in cosmological rest frame) of gamma-ray bursts. The primary intent of the paper is to discover optical emission and publish extremely rare (unique) high- quality light curves of the prompt optical emission of gamma-ray bursts during the non-monotonic stage of their evolution. We report that our team has discovered the optical counterpart of one of the bursts, GRB150413A.
ISSN:2331-8422
DOI:10.48550/arxiv.1511.02641