X-ray and radio observations of RX J1826.2-1450/LS 5039

Details X-ray and radio observations of RX J1826.2-1450/LS 5039 X-ray and radio observations of RX J1826.2-1450/LS 5039

1999-05-26

arxiv.org/abs/astro-ph/9905344v1

Astron.Astrophys. 347 (1999) 518-523

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, LaTeX, uses aa.cls. Accepted for publication in A&A

Scientific paper

RX J1826.2-1450/LS 5039 has been recently proposed to be a radio emitting high mass X-ray binary. In this paper, we present an analysis of its X-ray timing and spectroscopic properties using different instruments on board the RXTE satellite. The timing analysis indicates the absence of pulsed or periodic emission on time scales of 0.02-2000 s and 2-200 d, respectively. The source spectrum is well represented by a power-law model, plus a Gaussian component describing a strong iron line at 6.6 keV. Significant emission is seen up to 30 keV, and no exponential cut-off at high energy is required. We also study the radio properties of the system according to the GBI-NASA Monitoring Program. RX J1826.2-1450/LS 5039 continues to display moderate radio variability with a clearly non-thermal spectral index. No strong radio outbursts have been detected after several months.

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