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RXTE confirmation of the intermediate polar status of IGR J15094–6649

Butters, O. W.; Norton, A. J.; Mukai, K. and Barlow, E. J. (2009). RXTE confirmation of the intermediate polar status of IGR J15094–6649. Astronomy and Astrophysics, 498(2) L17-L19.

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DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1051/0004-6361/200911725
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Abstract

Aims. We aim to establish the X-ray properties of the intermediate polar candidate IGR J15094–6649 and therefore confirm its inclusion into the class.

Methods. 42 856 s of X-ray data from RXTE was analysed. Frequency analysis was used to constrain temporal variations and spectral analysis used to characterise the emission and absorption properties.

Results. A spin period of 809.7 ± 0.6 s is present, revealed as a complex pulse profile whose modulation depth decreases with increasing X-ray energy. The spectrum is well fitted by either a 17 ± 4 keV Bremsstrahlung or ? = 1.8 ± 0.1 power law, with an iron emission line feature and significant absorption in each case.

Conclusions. IGR J15094–6649 is confirmed to be an intermediate polar.

Item Type: Journal Article
Copyright Holders: 2009 ESO
ISSN: 1432-0746
Keywords: stars: binaries: general; stars: novae, cataclysmic variables; stars: individual: IGR J15094-6649; X-rays: binaries
Academic Unit/Department: ?? scie-phya ??
Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 16236
Depositing User: Andrew Norton
Date Deposited: 13 May 2009 16:05
Last Modified: 17 Nov 2012 12:28
URI: http://oro.open.ac.uk/id/eprint/16236
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