The Symbiotic X-ray Binary 3A 1954+319: A close-up view of a slowly rotating Neu

Physics

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White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, 3A 1954+319

Scientific paper

We propose for a triggered 40 ksec XMM-Newton-observation of the variable symbiotic X-ray binary 3A 1954+319. Studying the spectral properties of this neutron star system during a bright phase will help us to understand the physics of the accretion region as well as the medium originating from the stellar wind surrounding the neutron star. The so far nearly unobserved soft part of the spectrum will provide us with information about the 6.4 keV iron Ka line complex and the temperature and composition of the absorbing medium close tho the X-ray source. Additionally we intend to study the phase resolved behavior of the spectral parameters which are assumed to be strongly dependent on the pulse phase.

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