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Broadband Observations of the Transient X-ray Pulsar SAX J2103.5+4545

E. V. Filippova·A. A. Lutovinov·P. E. Shtykovsky·M. G. Revnivtsev·R. A. Burenin·V. A. Aref'ev·M. N. Pavlinsky·R. A. Sunyaev
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Abstract

We investigated the optical, X-ray, and gamma-ray variability of the pulsar SAX J2103.5+4545. Our timing and spectral analyses of the X-ray and gamma-ray emissions from the source using RXTE and INTEGRAL data show that the shape of its spectrum in the energy range 3 -- 100 keV is virtually independent of its intensity and the orbital phase. Based on XMM-Newton data, we accurately (5 arcsec) localized the object and determined the optical counterpart in the binary. We placed upper limits on the variability of the latter in the R band and the H-alpha line on time scales of the orbital and pulse periods, respectively.

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E. V. Filippova, A. A. Lutovinov, P. E. Shtykovsky, M. G. Revnivtsev, R. A. Burenin, V. A. Aref'ev, M. N. Pavlinsky, R. A. Sunyaev. 2004-10-25. Broadband Observations of the Transient X-ray Pulsar SAX J2103.5+4545. https://doi.org/10.1134/1.1833433

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