  We present the first results of our X-ray monitoring campaign on a 1.7 square
degree region centered on Sgr A* using the satellites XMM-Newton and Chandra.
The purpose of this campaign is to monitor the behavior (below 10 keV) of X-ray
sources (both persistent and transient) which are too faint to be detected by
monitoring instruments aboard other satellites currently in orbit (e.g., Rossi
X-ray Timing Explorer; INTEGRAL). Our first monitoring observations (using the
HRC-I aboard Chandra) were obtained on June 5, 2005. Most of the sources
detected could be identified with foreground sources, such as X-ray active
stars. In addition we detected two persistent X-ray binaries (1E 1743.1-2843;
1A 1742-294), two faint X-ray transients (GRS 1741.9-2853; XMM J174457-2850.3),
as well as a possible new transient source at a luminosity of a few times 1E34
erg/s. We report on the X-ray results on these systems and on the non-detection
of the transients in follow-up radio data using the Very Large Array. We
discuss how our monitoring campaign can help to improve our understanding of
the different types of X-ray transients (i.e., the very faint ones).
