• Superorbital period variations in the X-ray pulsar LMC X-4

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    • Keywords


      Accretion, accretion disks; stars: individual (LMC X-4); stars: neutron; X-rays: stars, binaries

    • Abstract


      We report the discovery of a decay in the superorbital period of the binary X-ray pulsar LMC X-4. Combining archival data and published long term X-ray light curves, we have found a decay in the third period in this system (P ∼ 30.3 day, P ∼ −2 × 10−5 s s−1). Along with this result, a comparison of the superorbital intensity variations in LMC X-4, Her X-1 and SMC X-1 is also presented.

    • Author Affiliations


      B. Paul1 S. Kitamoto2

      1. Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai - 400005, India
      2. Department of Physics, Rikkyo University, Nishii-Ikebukuro, 3-34-1, Toshima-ku, Tokyo - 171-8501, Japan
    • Dates

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