Table 1: Overview of the nine most frequent burster sources in the Galactic center region. They are ordered in decreasing number of bursts observed per source with the WFC. For each source a factor (conv.) in erg/count is derived to convert photon flux to energy flux in 2-28 keV . We also show the net exposure for each individual source and the distance as quoted in the literature. For each distance estimate we assume an error of 30%. The distances are derived from: [1] Galloway et al. (2002), [2] Muno et al. (2000), [3] in 't Zand et al. (1999), [4] Lutovinov et al. (2001), [5] Muno et al. (2001), [6] Gottwald et al. (1989), [7] Augusteijn et al. (1998), [8] Kuulkers & van der Klis (2000), [9] Heasley et al. (2000).
Source #bursts Exp. time Conv. d Ref.
  WFC (Ms) (10-8) (kpc)  
GX 354-0 423 7.4 1.9 5.4 [1]
KS 1731-260 339 6.7 1.5 7.0 [2]
GS 1826-24 260 6.5 1.9 8.0 [3]
A 1742-294 178 7.0 2.2 8.5 [4]
4U 1702-429 104 8.9 1.7 6.7 [5]
4U 1705-44 66 8.7 1.8 8.9 a
4U 1636-536 61 4.7 1.5 5.9 [7]
GX 3+1 61 6.9 1.6 4.5 [8]
4U 1820-30 49 7.1 1.6 7.6 [9]

a: Distance estimated from [6].

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