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      https://www.ias.ac.in/article/fulltext/joaa/028/04/0185-0196

    • Keywords

       

      Gamma rays: bursts; neutron stars, magnetars: individual (SGR 1806–20, SGR 1900+14 and AXP 1E 2259+586); X-rays: bursts.

    • Abstract

       

      We report here results from a study of X-ray bursts from 3 magnetar candidates (SGR 1806–20, SGR 1900+14 and AXP 1E 2259+586). We have searched for a pulse phase dependence of the X-ray burst rate from these sources. X-ray light curves were obtained with the Proportional Counter Array on-board the Rossi X-ray Timing Explorer during the periods of intense burst activity in these sources. On detailed analysis of the three sources, we found a very significant burst rate for all pulsar phases. However, some locations appear to produce bursts slightly more often, rendering the non-isotropic distribution. Only in the case of SGR 1900+14, there is a clear pulse phase dependence of burst rate.

    • Author Affiliations

       

      Chetana Jain1 Anjan Dutta1 Biswajit Paul2

      1. Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India.
      2. Raman Research Institute, Sadashivnagar, C. V. Raman Avenue, Bangalore 560 080, India.
    • Dates

       
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