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| Miscellaneous :
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Landi et al. 2011 ATel 3272:
- No Swift counterpart, but XMM SL source => possible variability
- J ~14.3, H ~12.3 and K ~11.5
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Krimm et al. 2012 ATel 3933:
- Detection with Swift/BAT and follow up observation with Swift/XRT=>refined position
- G017.3244+00.1344 IR counterpart has magnitudes of
12.93, 12,34 and 11.89 at, respectively, 3.6 microns, 4.5 microns and 5.8 microns
- 2 MASS source previously suggested is NOT the counterpart
- Source spectrum quite absorbed => NH~4.4e22 cm-2 and Γ~0.2
(with an error of +-0.6)
- Very probably a Galactic XRB
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Karasev et al. 2012 (Astr. Lett):
- Chandra observation => refinement of the position
Closest source is the UKIDS data a RA=18h 21m54.766s, Dec=-13 °ree; 47' 26.77", with J=18.00, H=16.01, Ks=14.44
- IR source probably composite or non-pointed
- Swift+INTEGRAL spectrum fitted with absorbed cut-off power law NH 3x1022, Γ~1, and
Ecut~6 keV
- Candidate HMXB
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La parola et al. 2013 (ApJ):
- Analysis of Swift BAT monitoring and Swift XRT pointings
- Discovery of orbital period P=72.44 days in BAT data
- Souirce detected only in 5 XRT pointings out of 12
- Broad band X-ray spectral analysis => absorbed cut-off power law
NH~4 x 1022 cm-2, Γ~-0.1, Ecut~11 keV
- Source is an HMXB, probably with Be companion
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