Matches in SemOpenAlex for { <https://semopenalex.org/work/W217023890> ?p ?o ?g. }
- W217023890 endingPage "A108" @default.
- W217023890 startingPage "A108" @default.
- W217023890 abstract "We present a comprehensive analysis of the whole sample of available XMM-Newton observations of High Mass X-ray Binaries (HMXBs) until August, 2013, focusing on the FeK{alpha} emission line. This line is a key tool to better understand the physical properties of the material surrounding the X-ray source within a few stellar radii (the circumstellar medium). We have collected observations from 46 HMXBs, detecting FeK{alpha} in 21 of them. We have used the standard classification of HMXBs to divide the sample in different groups. We find that: (1) FeK{alpha} is centred at a mean value of 6.42 keV. Considering the instrumental and fits uncertainties, this value is compatible with ionization states lower than FeXVIII. (2) The flux of the continuum is well correlated with the flux of the line, as expected. Eclipse observations show that the Fe fluorescence emission comes from an extended region surrounding the X-ray source. (3) FeK{alpha} is narrow (width lower than 0.15keV), reflecting that the reprocessing material does not move at high speeds. We attempt to explain the broadness of the line in terms of three possible broadening phenomena: line blending, Compton scattering and Doppler shifts (with velocities of the reprocessing material V=1000-2000 km/s). (4) The equivalent hydrogen column (NH) directly correlates with the EW of FeK{alpha}, displaying clear similarities to numerical simulations. It highlights the strong link between the absorbing and the fluorescent matter. The obtained results clearly point to a very important contribution of the donors wind in the FeK{alpha} emission and the absorption when the donor is a supergiant massive star." @default.
- W217023890 created "2016-06-24" @default.
- W217023890 creator A5007784362 @default.
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- W217023890 creator A5056268132 @default.
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- W217023890 creator A5079798281 @default.
- W217023890 date "2015-04-01" @default.
- W217023890 modified "2023-10-14" @default.
- W217023890 title "An<i>XMM-Newton</i>view of FeK<i>α</i>in high-mass X-ray binaries" @default.
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