IGR J16413-4046

Other name = CXOU J164119.4-404737

Type Redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
2MASS J16411948-4047378 Tomsick et al. 2011 ATel 3342
Published Papers
Miscellaneous :

Landi et al. 2010 ATel 2731:
  • Faint 2.5σ X-ray source in IBIS error box
  • not detected at <3 keV
  • USNO object has R~15.6 and 2MASS one I ~13.65, H ~13.23 and K ~13.27
Landi et al. 2011 ATel 3178:
  • New Swift observation => better significance
  • X-ray spectrum: absorbed power law, Γ = 1.8, NH ~ 1023 cm-2
Tomsick et al. 2011 ATel 3342:
  • Chandra => refined position
  • 2MASS J16411948-4047378 is present in the DENIS and USNO catalogs and has H = 15.08, Ks = 13.97
  • 2MASS J16411927-4047323, formerly proposed at the IR counterpart is at 6" from the Chandra position and not the counterpart
Tomsick et al. 2012 (ApJ):
  • Further consideration on the Chandra obs and implications
  • source found in the WISE catalogue, L=12.599 M=1.436 N=8.482, 0=6.460; plus J magnitude of 2MASS star is 14.701
  • No variability between Chandra and Swift obs
  • Chandra spectrum fitted with 2 model, one with a marginally detected 5 keV line
  • NH=6.3 (resp.3.9) x 1022 cm-2 and Γ=0.47 (resp. 0.29) for model without (resp. with) Gaussian line
  • Extrapolation of Chandra spectrum in agreement with IBIS flux
  • SED => strong IR excess. Non thermal emission possibly from a jet
  • Non variability would rather suggest an AGN, in this case a Sey 2 would be favoured

Last updated 21 August 2012

Jerome Rodriguez