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

O. W. Butters*, A. J. Norton, K. Mukai, E. J. Barlow

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)

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 Gamma = 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.

Original languageEnglish
Pages (from-to)L17-L19
Number of pages3
JournalAstronomy and Astrophysics
Volume498
Issue number2
DOIs
Publication statusPublished - May 2009

Keywords

  • stars: binaries: general
  • stars: novae, cataclysmic variables
  • stars: individual: IGR J15094-6649
  • X-rays: binaries

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