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Revisiting SW J2000.6+3210: a persistent Be X-ray pulsar?

Pradhan, Pragati and Maitra, Chandreyee and Paul, Biswajit and Paul, BC (2013) Revisiting SW J2000.6+3210: a persistent Be X-ray pulsar? In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 436 (2). pp. 945-952.

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Official URL: http://dx.doi.org/10.1093/mnras/stt1504

Abstract

We present a detailed timing and spectral analysis of the Be X-ray binary SW J2000.6+3210 discovered by the Burst Alert Telescope Galactic plane survey. Two Suzaku observations of the source made at six months interval, reveal pulsations at similar to 890 s 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 X-ray Imaging Spectrometer 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 power-law and high-energy cut-off model along with a hot blackbody component. No change in spectral parameters is detected between the observations. We have also analysed several short observations of the source with Swift/XRT and detected only a few per cent variation in flux around a mean value of 3.5 x 10(-11) erg cm(-2) s(-1). The results indicate that SW J2000.6+3210 is a member of persistent Be X-ray binaries which have the same broad characteristics as this source.

Item Type: Journal Article
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Additional Information: Copyright for this article belongs to the OXFORD UNIV PRESS, ENGLAND
Keywords: pulsars: general; X-rays: binaries; X-rays: individual: SW J2000.6+3210
Department/Centre: Division of Physical & Mathematical Sciences > Joint Astronomy Programme
Date Deposited: 03 Feb 2014 11:31
Last Modified: 03 Feb 2014 11:32
URI: http://eprints.iisc.ernet.in/id/eprint/48304

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