IGR J21343+4738

Other name = IGR J21347+4737

Type Pulse P. Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
HMXB/BII Ve 320.35s USNO B1.0 1376-0511904 Sazonov et al. 2008
Published Papers
Miscellaneous :
Sazonov et al. 2008 :
  • R~14 USNO B2 object has a spectrum typical of B3 star =>HMXB
Bikmaev et al. 2008 :
  • Optical spectroscopy confirms source is HMXB with a B star
Masetti et al. 2009:
  • Optical spectroscopy
  • B3 V star
  • d~5.8 kpc, Av=2.2
Reig & Zezas 2013 (A&A):
  • Optical monitoring, BVRI photometry and spectroscopic observations
  • Optical counterpart is a BII Ve shell star at d~ 8.5 kpc
  • Optical variability attributed to formation of equatorial disc around the companion + development of a enhanced density perturbation revolving inside the disc
  • Formation and dissipitation of the disc witnessed
  • System seen near edge-on
Reig & Zezas 2014 (MNRAS):
  • XMM-Newton observation
  • Discovery of X-ray pulsations at 320.35s, with a fraction of ~45%
  • 0.2-12 keV spectrum : black body (kT~ 0.11keV) plus power law (Γ~1.02), modified by absorption (NH~1.08e22cm-2)
  • Observed X-ray emission from accretion via low velocity equatorial wind, since companion's decretion disc has vanished

Last updated 22 May 2014

Jerome Rodriguez