Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-02-25
Astronomy and Astrophysics
Astrophysics
14 pages, 4 figures and 2 tables. Accepted in Journal of Astrophysics and Astronomy
Scientific paper
10.1007/BF02702649
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 $\sim$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 to that with 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.
Mukherjee Uddipan
Paul Biswajit
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