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<p>We present results of a comprehensive analysis of the polarization characteristics of GRB&#xa0;200503A and GRB&#xa0;201009A observed with the Cadmium Zinc Telluride Imager (CZTI) on board AstroSat. Despite these Gamma-ray bursts (GRBs) being reasonably bright, they were missed by several spacecrafts and so far had not been localized well, hindering polarization analysis. We present positions of these bursts obtained from the Inter-Planetary Network and the newly developed CZTI localization pipeline. We then undertook polarization analyses using the standard CZTI pipeline. We cannot constrain the polarization properties for GRB&#xa0;200503A, but found that GRB&#xa0;201009A has a high degree of polarization.</p>

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Investigating polarization characteristics of GRB 200503A and GRB 201009A

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • Divita Saraogi,
  • Suman Bala,
  • Jitendra Joshi,
  • Shabnam Iyyani,
  • Varun Bhalerao,
  • J. Venkata Aditya,
  • D. S. Svinkin,
  • A. Tsvetkova,
  • D. D. Frederiks,
  • A. L. Lysenko,
  • A. V. Ridnaia,
  • A. S. Kozyrev,
  • D. V. Golovin,
  • I. G. Mitrofanov,
  • M. L. Litvak,
  • A. B. Sanin,
  • Tanmoy Chattopadyay,
  • Soumya Gupta,
  • Gaurav Waratkar,
  • Dipankar Bhattacharya,
  • Santosh Vadawale,
  • Gulab Dewangan

摘要

We present results of a comprehensive analysis of the polarization characteristics of GRB 200503A and GRB 201009A observed with the Cadmium Zinc Telluride Imager (CZTI) on board AstroSat. Despite these Gamma-ray bursts (GRBs) being reasonably bright, they were missed by several spacecrafts and so far had not been localized well, hindering polarization analysis. We present positions of these bursts obtained from the Inter-Planetary Network and the newly developed CZTI localization pipeline. We then undertook polarization analyses using the standard CZTI pipeline. We cannot constrain the polarization properties for GRB 200503A, but found that GRB 201009A has a high degree of polarization.