2004/10/25 by E. Filippova, E. V. Filippova, A. Lutovinov +13 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1134/1.1833433
published as Astron.Lett. 30 (2004) 824-833; Pisma Astron.Zh. 30 (2004) 905914 · 17 pages, 7 figures, Astronomy Letters, 30, 824-833 (2004)
arxiv created 2004/10/25 · openalex publication_date 2004/12/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
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″) localized the object and determined the optical counterpart in the binary. We placed upper limits on the variability of the latter in the H α line on time scales of the orbital and pulse periods, respectively.