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| Miscellaneous :
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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
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Landi et al. 2011 ATel 3178:
- New Swift observation => better significance
- X-ray spectrum: absorbed power law, Γ = 1.8, NH ~ 1023 cm-2
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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
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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
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