Revisiting SWJ2000.6+3210 : A persistent Be X-ray pulsar ?
Abstract
We present a detailed timing and spectral analysis of the Be X-ray binary SWJ2000.6+3210 discovered by the BAT Galactic plane survey. Two Suzaku observations of the source made at six months interval, reveal pulsations at ~ 890s for both observations with a much weaker pulse fraction in the second one. Pulsations are clearly seen in the energy band of 0.3-10 keV of XIS for both observations and at high energies up to 40 keV for the second observation. The broad band X-ray spectrum is consistent with a powerlaw and high energy cutoff model along with a hot blackbody component. No change in spectral parameters is detected between the observations. We have also analyzed several short observations of the source with Swift/XRT and detected only a few percent variation in flux around a mean value of 3:5 *10^{-11} erg cm^{-2} s^{-1}. The results indicates that SWJ2000.6+3210 is a member of persistent Be X-ray binaries which have the same broad characteristics as this source.
Keywords
Cite
@article{arxiv.1308.2739,
title = {Revisiting SWJ2000.6+3210 : A persistent Be X-ray pulsar ?},
author = {Pragati Pradhan and Chandreyee Maitra and Biswajit Paul and B. C. Paul},
journal= {arXiv preprint arXiv:1308.2739},
year = {2015}
}
Comments
Accepted for publication in MNRAS, 14 pages, 6 figures