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 & Astrophysics, 498(2) L17-L19.

DOI: https://doi.org/10.1051/0004-6361/200911725

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.

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About

• Item ORO ID
• 16236
• Item Type
• Journal Item
• ISSN
• 1432-0746
• Keywords
• binary stars: binaries; novae; cataclysmic variables; X-ray binaries
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2009 ESO
• Depositing User
• Andrew Norton