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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/007/04/0299-0304

    • Keywords

       

      accretion—gamma-ray sources—pulsation—X-ray sources

    • Abstract

       

      An examination of the existing period searches for 2CG195 + 4 leads to the conclusion that the 59 second periodicity is highly significant only for the 1981 March 17–18 detection of Bignami, Caraveo & Paul (1984). The statistical significance is increased substantially if the pulsation period is half the previously reported value. The period derivative is not well determined. Here we propose that 2CG 195 + 4 is a neutron star powered by accretion from a low (≲ 1M⊙) mass main-sequence companion. A distance of a few hundred pc would imply that the neutron star is a fast rotator and is spinning down.

    • Author Affiliations

       

      D. A. Leahy1 S. V. Damle2 S. Naranan2

      1. Department of Physics, The University of Calgary, Calgary, Alberta - T2N 1N4, Canada
      2. Tata Institute of Fundamental Research, Bombay - 400005

    • Dates

       
      Published
      December 1986
      Manuscript received
      12 June 1986
      Accepted
      10 September 1986

  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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