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

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 Γ = 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.