DETECTION OF GAMMA-RAY POLARIZATION IN PROMPT EMISSION OF GRB 100826A

@inproceedings{Nakazawa2011DETECTIONOG,
  title={DETECTION OF GAMMA-RAY POLARIZATION IN PROMPT EMISSION OF GRB 100826A},
  author={Kazuhiro Nakazawa and Debabrata Mukhopadhyay and Shuichi Gunji and Tatehiro Mihara and Kenji Toma and Tomonori Sakashita and Yoshiyuki Morihara and Takuya Takahashi and Noriyuki Toukairin and Hirofumi Fujimoto and Yoshiki Kodama and Shin Kubo and Ikaros Demonstration Team},
  year={2011}
}
We report the polarization measurement in prompt γ-ray emission of GRB 100826A with the Gamma-Ray Burst Polarimeter on board the small solar-power-sail demonstrator IKAROS. We detected the firm change of polarization angle (PA) during the prompt emission with 99.9% (3.5σ) confidence level, and the average polarization degree (Π) of 27% ± 11% with 99.4% (2.9σ) confidence level. Here the quoted errors are given at 1σ confidence level for the two parameters of interest. The systematic errors have… CONTINUE READING

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