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• W2897679306 abstract "We report the spectral analysis of accretion powered millisecond X-ray pulsar SAX J1748.9−2021 from the NuSTAR observation made during its 2015 outburst. The spectra displayed a broad emission line at ∼6.5 keV with line width of ∼0.5 keV and excess above ∼20 keV due to Compton hump. The persistent emission of SAX J1748.9−2021 is described by a combination of soft thermal component with |$kT =0.62^{+0.03}_{-0.05}$| keV and thermally Comptonized component with |$kT_text{e}=2.50^{+0.06}_{-0.03}$| keV reflected from the disc with reflection fraction of |$0.30^{+0.08}_{-0.04}$|⁠. We have modelled the reflection spectrum with self-consistent model relxillCP and have found the inclination of the accretion disc to be |$32{^{circ}_{.}} 3^{+4.8}_{-4.7}$| and log ξ is equal to |$3.05^{+0.40}_{-0.34}$|⁠. We have obtained an upper limit of 57 km for inner disc radius; and the estimated magnetic field strength at the poles is less than 3.4 × 109 G. This kind of detailed investigation of reflection spectrum of SAX J1748.9−2021, especially above 10 keV, has been achieved only because of high statistics NuSTAR data of the source." @default.
• W2897679306 created "2018-10-26" @default.
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• W2897679306 date "2018-10-17" @default.
• W2897679306 modified "2023-09-23" @default.
• W2897679306 title "Study of the reflection spectra of SAX J1748.9−2021" @default.
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• W2897679306 doi "https://doi.org/10.1093/mnras/sty2808" @default.
• W2897679306 hasPublicationYear "2018" @default.
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