events for each observation using circular regions with radii of 20 arcseconds, and extracting photons with energies between 2–10 keV and 0.5–10 keV.

[ccccc]{} [*RXTE*]{}& & & &\
1998 & 50914.8 & 50939.6 & 160 & [30411]{}\
2000 & 51564.1 & 51604.6 & 130 & [40035]{}\
2002 & 52562.1 & 52604.8 & 664 & [70080]{}\
2005 & 53522.7 & 53587.9 & 267 & [91056]{},[91048]{}\
2008 & 54731.9 & 54776.1 & 236 & [93027]{}\
&&&&\
SWIFT & & & &\
2008 & 54756.6 & 54778.3 & 15 & [0003003435]{}-[00030034044]{}\
\[tab:rxteobs\]

Results {#1Hz:results}
=======

The X-ray lightcurves and the re-flaring state {#re-flarings}
----------------------------------------------

In the 2008 outburst re-flaring state, the lightcurve reached very faint luminosities, with a large portion of the re-flares below the sensitivity limit of [[*RXTE*]{}]{}, but above the detection threshold of [[*Swift*]{}-XRT]{}. The flux reached a minimum level of $2.0\times
10^{-13}\rm\,erg\,s^{-1}\,cm^{-2}$ in the 0.5–10 keV band, which corresponds to a luminosity of $\sim 3\times 10^{32} \rm\,erg\,s^{-1}$ at 3.5 kpc. This luminosity is of the same order of magnitude as that observed by @wij03 and @cam08 during the 2000 and 2005 re-flares.

A property of all the re-flares is the periodicity on time scales of a few days, creating the 