IGR J17200-3116

Other name = 1RXS J172006.1-311702

Type Pulse P. Radio Counterpart Optical Counterpart
R.A. (J2000) Dec. (J2000) References (position) R.A. (J2000) Dec. (J2000) References (position)
HMXB/Pulsar 328.182s 17h 20m 06.1s -31deg 17' 02.0" Stephen et al. 2005 A&A, 432, L49
Published Papers
Miscellaneous :
B~19. Possible IR counterpart
Masetti et al. (2006) :
  • Halpha, EW=5.5 Angstrom
  • R=14.3
Tomsick et al. (2008) :
  • Chandra position confirms all proposed associations
  • Absorbed power law, NH=1.9x1022 cm-2, Γ= 0.8, Unabs. 0.3-10 keV flux=26 e-12 erg/cm2/s
  • Absorption not necessarily local, although slightly higher than Galactic value
Nichelli et al. (2011) ATel 3205:
  • Coherent X-ray pulsations detected by Swift-XRT at a period of 328.182(3) s
  • P_dot = 1.5e-8 s/s
  • Periodicity detected in the 18-30 keV band in archival INTEGRAL-ISGRI observations from 2003 to 2006
  • Confirms that IGR J17200-3116 = accreting pulsar / HMXB
Esposito et al. 2014 (A&A):
  • Analysis of 2005-2011 Swift data and a 20 ks XMM osbervation (Sept. 2013)
  • Strong pulse to pulse variations and pulse profile energy dependence evident => pulsar in massive binary confirmed
  • Variation of NH by up to a factor of 4
  • Dip in XMM light curve characterized by a softening of emission => probable transition to a different accretion regime

Last updated 24 April 2014

Jerome Rodriguez