LS 5039 / RX J1826.2-1450: A Young Pulsar?

Details LS 5039 / RX J1826.2-1450: A Young Pulsar? LS 5039 / RX J1826.2-1450: A Young Pulsar?

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..797..581m&link_type=abstract

INTERACTING BINARIES: Accretion, Evolution, and Outcomes. AIP Conference Proceedings, Volume 797, pp. 581-584 (2005).

Computer Science

1

X-Ray Binary Stars, Pulsars, X-Ray Photoelectron Spectra, X-Ray Binaries, Pulsars, X-Ray Sources, X-Ray Bursts

Scientific paper

Recent XMM-Newton and Chandra observations of the high mass X-ray binary LS 5039 / RX J1826.2-1450 caught the source in a faint X-ray state. In contrast with previous Rossi-XTE observations, we fail to detect any evidence of iron line emission. We also fail to detect X-ray pulsations. The X-ray spectrum can be well fitted by a simple powerlaw, slightly harder than in previous observations, and does not require the presence of any additional disk or blackbody component. XMM-Newton data imply a X-ray photoelectric absorption consistent with optical reddening (NH ~ 7 × 1021 cm-2), indicating that no strong local absorption occurs. Among the possible source emission mechanisms and hypotheses on the nature of the compact object, a young pulsar scenario may be the most appropriate.

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