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    • Luminosity dependent study of the high mass X-ray binary pulsar 4U 0114 + 65 with ASCA

      U. Mukherjee B. Paul

      Volume 27 Issue 1 March 2006 pp 37-45

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/027/01/0037-0045

    • Keywords

       

      Stars: pulsar: individual (4U 0114 + 65); X-rays: pulsar

    • Abstract

       

      Here we report the spectral characteristics of the high and low states of the pulsar 4U 0114 + 65 and examine the change in the parameters of the spectral model. A power law and a photoelectric absorption by material along the line of sight together with a high energy cut-off suffice to describe the continuum spectrum in both the states. A fluorescence iron line at ∼6.4 keV is present in the high as well as in the low state, though it is less intense in the latter. The photon index, cut-off energy and e-folding energy values hardly show any discernible change over the states. We compare these spectral characteristics as observed with ASCA with those of other satellites. We also compare the spectral characteristics of 4U 0114 + 650 with other X-ray sources which show intensity variation at different time scales.

    • Author Affiliations

       

      U. Mukherjee1 B. Paul1

      1. Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai - 400 005, India

    • Dates

       
      Published
      March 2006
      Manuscript received
      29 October 2005
      Accepted
      21 February 2006

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