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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/042/0058

    • Keywords

       

      X-rays: binaries; stars: neutron; pulsars: individual: Centaurus X-3; X-rays: stars; methods: data analysis; AstroSat: LAXPC.

    • Abstract

       

      We present the timing results of out-of-eclipse observations of Centaurus X-3 spanning half a binary orbit, performed on 12–13 December, 2016 with the Large Area X-ray Proportional Counter (LAXPC) on-board AstroSat. The pulse profile was confirmed to exhibit a prominent pulse peak with a secondary inter-pulse. The systemic spin period of the pulsar was found to be $4.80188 \pm 0.000085$ s in agreement with its spin up trend. The spin up timescale seems to have increased to $7709\pm 58$ yr that points to negative torque effects in the inner accretion disk. We also report the derived values of projected semi-major axis and orbital velocity of the neutron star.

    • Author Affiliations

       

      PARISEE SHIRKE1 SUMAN BALA1 JAYASHREE ROY1 DIPANKAR BHATTACHARYA1

      1. Inter-University Centre for Astronomy and Astrophysics (IUCAA), Post Bag 4, Ganeshkhind, Pune 411 007, India.
    • Dates

       
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