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• W3118664669 endingPage "1190" @default.
• W3118664669 startingPage "1163" @default.
• W3118664669 abstract "We present a broadband spectral analysis of accreting neutron stars using data from XIS and PIN onboard emph{Suzaku}. From spectral fits of these sources with a single continuum model including a powerlaw and high energy cut-off, cyclotron lines (where required), we studied the correlation between various spectral parameters. Among 39 sources we studied, 16 are those where the existence of a cyclotron line is known in literature, and 29 need a cutoff energy. Among these 29 sources, 18 have cutoff energy bunched in a range of 3-10 keV while for 11 sources, it spreads over 12-25 keV. This bi-modal behaviour is not based on the specific nature of the systems being a Be XRB or supergiant HMXB, nor on different beaming patterns characterizing their X-ray emission (as inferred from simultaneous study of their pulse profiles). The broadband coverage of emph{Suzaku} also shows that the cutoff energies saturate for higher values of cyclotron line energies - consistent with previous works in literature - for both the groups and the width of the cyclotron line show a weak correlation with the cyclotron line energy. We also find an anticorrelation with luminosity for both spectral index and folding energy, respectively. Unlike previous works, we did not detect any anticorrelation between X-ray luminosity and EW of K$alpha$ lines. Finally, we show that the EW and flux of the iron K$alpha$ line are smaller in SFXTs than classical NS-HMXBs. We discuss these findings in terms of different properties of stellar winds and accretion mechanisms." @default.
• W3118664669 created "2021-01-18" @default.
• W3118664669 creator A5008110246 @default.
• W3118664669 creator A5015459781 @default.
• W3118664669 creator A5062004328 @default.
• W3118664669 creator A5067370626 @default.
• W3118664669 date "2021-01-12" @default.
• W3118664669 modified "2023-10-16" @default.
• W3118664669 title "Comprehensive broad-band study of accreting neutron stars with <i>Suzaku</i>: Is there a bi-modality in the X-ray spectrum?" @default.
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