IGR J15094-6649

Other name = 1RXS J150925.7-664913(?)

Type Orb. P / Spin P. Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
CV/ IP 5.89 h / 13.4904 min
U0225_21896607 Masetti et al. 2006 ATel 783
15 09 26.00 -66049' 23.4"
Published Papers
Miscellaneous :
Masetti et al. 2006 ATel 783:
  • Balmer and HeI lines in emission at z = 0
  • Likely CV
Barlow et al. (2006) :
  • 20-100 keV Power law photon index 3.6, or bresstrahlung kT=13.8 keV
Masetti et al. 2006:
  • Halpha, Hbeta, He II emission lines
  • R=14.7
  • d=140 pc
Landi et al. 2009:
  • Swift and INTEGRAL obs => power law or bremsstrahlung
  • Possible IP
Pretorius 2009:
  • Optical observations: Phase resolved spectroscopy => Orb. period 5.89h
  • Spin period of 13.4904 min
  • Source is a confirmed IP
Butters et al. 2009:
  • RXTE observations
  • Pulse at 809.7s wih complex pulse profile
  • Ebergy spectrum elle fitted wirth 17 keV Bremstrahlung or Γ=1.8 power law
  • Presence of an iron line, and significant absorption
  • Confirmation of the IP nature of the source
Revnivtsev et al. (2010) :
  • Study of optical aperiodic variability
  • νbreak~1.3 x Spin period
  • If break freq <=> inner disc radius then inner radius close to corotation with WD magnetosphere
Potter et al. (2012) :
  • Optical photo-polarimetric studies
  • I (14-15) and B (15-15.7) bands magnitudes are consistent with that of the V band
  • Discovery of circularly polarised light in both bands
  • Polarised signals are spin modulated and show varying amplitudes (1-2.5%)
  • Potential beat frequency also seen <=> would imply an orbital period of 4.73 hr (1d alias with period obtained from the Hα studies)
  • Discuss the implications in terms of origin of the signal and geometry of the source.
Bernardini et al. 2012 (A&A):
  • Multi-wavelengths observations (XMM, INTEGRAL)
  • Pulse and orbital periods = 808.7s and 5.89 hr
  • Broad band spectral analysis
  • Disc overflow accretion mode
  • MWD~0.89 Msun at d~600 pc

Last updated 30 Apr. 2012

Jerome Rodriguez