\begin{table}%t1 \par \caption{\label{tab:log-gen} Log of the \xte\ observations analysed in this paper.} %\centerline { \small\begin{tabular}{c c c c c c c} \hline \hline Observatory &Instrument & Bandpass & Period & Total Exposure & Number & Observation Type \\ & & & (MJD--53596.5)$^a$ & (ks) & of Obs. &\\ \hline \integral & IBIS/ISGRI & 18--200~keV & 2.5--23.8 & 315 & 3/4 & ToO (5$\times$5$^b$)/Galactic Bulge$^c$ (hex$^d$)\\ & JEM-X & 5--25~keV & 5.9--14.8 & 240 & 3 & ToO \\ \rxte & PCA & 3--25~keV & 3.1--103.3 & 146 & 54 & Public\\ & HEXTE & 20--150~keV & 3.1--103.3 & 146 & 54 & Public\\ \swift$^e$ & XRT & 0.3--10~keV & 5.8 & 0.13 & 1 & Public \\ REM$^e$ & ROSS & 550--800~nm & 22.7--76.5 & 3.2 & 10 & ToO \\ NTT$^e$ & SUSI-2 & 320--900~nm & 9.6--0.6 & 1 & ToO \\ VLA$^e$ & L,C,X,U & 1.4--15~GHz & 5.6--196.01 & 4.8/15.4 & 1/13 & ToO/Public\\ VLBA$^e$ & S/X & 2.3-8.4~GHz & 8.54--8.67 & 10.8 & 1 & ToO \\ \hline \end{tabular}} \medskip \par Notes:\\ $^a$ MJD 53596.5 corresponds to the maximum flux of the source measured during the period covered by \rxte/ASM.\\ $^b$ 5$\times$5 dither pattern around the nominal target location.\\ $^c$ Monitoring program of E. Kuulkers et~al. (see \citealt{Kuulkers:2007}).\\ $^d$ Hexagonal pattern around the nominal target location.\\ $^e$ Snap-shot observations with the specified instruments or receivers. \end{table}