Astron. Astrophys. 347, 518-523 (1999)

6. Conclusions

We have presented a general overview of the X-ray and radio emission properties of the massive X-ray binary RX J1826.2-1450/LS 5039. Our X-ray and radio results are mostly based on long term (few months) monitorings of the source, with our main conclusions being:

1. In the X-rays, a timing analysis has been performed showing neither pulsed nor periodic emission on time scales of 0.02-2000 s and 2-200 d, respectively. The X-ray spectrum has been found to be significantly hard (up to 30 keV), with no cut-off required. It can be fitted satisfactorily with a power-law plus a strong Gaussian iron line.

2. At radio wavelengths, the GBI monitoring confirms the long-term persistence of the RX J1826.2-1450/LS 5039 radio emission in time scales of months, always with a non-thermal synchrotron spectrum. The day-to-day variability continues to be moderate most of the time (%), and no strong radio outbursts have been observed.

3. The classification of RX J1826.2-1450/LS 5039 among the radio loud HMXRB group is reinforced. Although some specific differences with other members of this class do exist, noticeable similarities can be found.

© European Southern Observatory (ESO) 1999

Online publication: June 30, 1999
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