IGR J05414-6858

Other name =

Type Pulse/orb. Periods Radio Counterpart Optical-UV Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
Be-HMXB
BO-1 IIIe companion+NS		 4.4208s / 19.9 days (?) 05h 41m 26.66s -69o 01' 23.7" (Swift/UVOT) Rau et al. 2010 ATel 2704
Published Papers
Miscellaneous :
Lutovinov & Grebenev 2010 ATel 2696:
  • Swift follow-up observation
  • 2MASS 05412663-6901224 a possible counterpart with J=15.084, H=14.853, K=14.989
  • USNO-B1.0 0209-0129816, with R=15.6.
  • Spectrum power law like with Γ=0.3
Rau et al. 2010 ATel 2704:
  • UVOT and GROND optical-UV analysis
  • 2MASS counterpart is blended
  • One source only in UVOT
  • g = 15.53, r = 15.75, i = 16.11, z = 16.17, J = 16.3, H = 16.8 , K = 17.3, V = 15.37, B = 15.19, U = 15.05, UVW1 = 15.05, UVM2 = 15.10, UVW2 = 15.03
  • SED best represented by a B1-2III stellar template => transient Be-HMXB in the LMC.
Sturm et al. 2011 ATel 3537:
  • Swift detection of a new outburst in 2011
  • Joint fit to the 3 spectra (2 from 2010 outburst 1 from 2011) => NH(LMC)=2.3x1021 cm-2 and a Γ=0.83
Sturm et al. 2012 (A&A):
  • XMM-Newton observation => refine the X-ray position of the source
  • X-ray position compatible with the previous positions (OGLEIII LMC175.4.21714)
  • Detect a 48% pulsation at 0.2262 Hz (4.4208s) in the X-ray light curve, not seen in the INTEGRAL hard X-ray data =>primary is a neutron star.
  • Possible modulations at 19.9 days interpreted as orbital period of the system
  • Optical counterpart confirmed as a B0-1 IIIe

Last updated 28 Nov. 2012

Jerome Rodriguez