First results of observations of transient pulsar SAXJ2103.5+4545 with the INTEGRAL observatory

Details First results of observations of transient pulsar SAXJ2103.5+4545 with the INTEGRAL observatory First results of observations of transient pulsar SAXJ2103.5+4545 with the INTEGRAL observatory

2003-06-13

arxiv.org/abs/astro-ph/0306289v1

Astron.Lett. 29 (2003) 713-718

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted for publication in the Astronomy Letters

Scientific paper

10.1134/1.1624456

We present preliminary results of observations of X-ray pulsar SAX J2103.5+4545 with INTEGRAL observatory in Dec 2002. Maps of this sky region in energy bands 3-10, 15-40, 40-100 and 100-200 keV are presented. The source is significantly detected up to energies of $\sim100$ keV. The hard X-ray flux in the 15-100 energy band is variable, that could be connected with the orbital phase of the binary system. We roughly reconstructed the source spectrum using its comparison to that of Crab nebula. It is shown that the parameters of the source spectrum in 18-150 keV energy range are compatible with that obtained earlier by RXTE observatory

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