Table 3: Summary of the results for all the X-ray observations on LS 5039 performed by instruments with imaging capabilities. The unabsorbed fluxes in the energy range 0.3-10 keV, photon indices, and $N_{\rm H}$ (with wabs model) values are given. BeppoSAX flux errors are the flux dispersion accounting for the count rate changes by a factor of two during the observation and neglecting photon index variations. ASCA flux errors are assumed to be 10% of the flux. The given 2005 XMM-Newton $N_{\rm H}$ values are computed with the wabs model for comparison with 2003 values. For more details, see M05 (2003 XMM-Newton data), R03 ( BeppoSAX data), and Yamaoka, K., private communication ( ASCA data).

Date
MJD Mission Phase range Flux (0.3-10 keV) Photon index $N_{\rm H}$ (wabs)
yyyy-MM-dd       $\times10^{-11}$ erg cm-2 s-1   $\times10^{21}$ cm-2

1999-10-04
51 455.9 ASCA 0.38-0.47 $0.80\pm 0.08$ $1.6\pm 0.1$ $7\pm 1$
2000-10-01 51 818.5 BeppoSAX 0.97-0.21 $0.5\pm 0.2$ $1.8\pm 0.2$ $\rm 10^{+3}_{-4}$
2002-09-10 52 527.3 Chandra 0.71-0.73 $0.8\pm 0.3$ $1.1\pm 0.2$ $6\pm 2$
2003-03-08 52 706.3 XMM-Newton 0.54-0.57 $1.03\pm 0.07$ $\rm 1.56^{+0.02}_{-0.05}$ $\rm 7.2^{+0.3}_{-0.5}$
2003-03-27 52 725.8 XMM-Newton 0.55-0.58 $0.97\pm 0.07$ $\rm 1.49^{+0.05}_{-0.04}$ $\rm 6.9^{+0.5}_{-0.3}$
2005-04-13 53 473.1 Chandra 0.86-0.87 $2\pm 1$ $1.1\pm 0.2$ 6$\pm 1$
2005-09-22 53 635.8 XMM-Newton 0.49-0.53 $\rm 1.18^{+0.03}_{-0.07}$ $1.51\pm 0.02$ $6.7\pm 0.2$
2005-09-24 53 637.8 XMM-Newton 0.02-0.05 $0.74\pm 0.07$ $1.59\pm 0.03$ $6.6\pm 0.2$


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