McBride, V. A., Wilms, J. (Joern), Coe, M. J., Kreykenbohm, I., Rothschild, R. E., Coburn, W. (Wayne), Galache, J. L., Kretschmar, P., Edge, W. R. T. and Staubert, R.. (2006) Study of the cyclotron feature in MXB 0656-072. Astronomy & Astrophysics, Vol.451 (No.1). pp. 267-272. ISSN 0004-6361

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Abstract

We have monitored a type II outburst of the Be/X-ray binary MXB 0656-072 in a series of pointed RXTE observations during October through December 2003. The source spectrum shows a cyclotron resonance scattering feature at 32.8(-0.4)(+0.5) keV, corresponding to a magnetic field strength of 3.67(-0.04)(+ 0.06) x 10(12) G and is stable through the outburst and over the pulsar spin phase. The pulsar, with an average pulse period of 160.4 +/- 0.4 s, shows a spin-up of 0.45 s over the duration of the outburst. From optical data, the source distance is estimated to be 3.9 +/- 0.1 kpc and this is used to estimate the X-ray luminosity and a theoretical prediction of the pulsar spin-up during the outburst.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	May 2006
Volume:	Vol.451
Number:	No.1
Number of Pages:	6
Page Range:	pp. 267-272
Identification Number:	10.1051/0004-6361:20054239
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	National Research Foundation (South Africa) (NRF) , British Council, University of Southampton, Deutsche Forschungsanstalt für Luft- und Raumfahrt (DLR)
Grant number:	50 OG 9601 (DLR), 50 OG 0501 (DLR)
URI:	http://wrap.warwick.ac.uk/id/eprint/33618

Data sourced from Thomson Reuters' Web of Knowledge

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