Abstract
ABSTRACT We present X-ray observations of the recent outburst of 2022 from the neutron star low-mass X-ray binary source 1A 1744−361. Spectral properties of the source have been analysed using joint Nuclear Spectroscopic Telescope Array and Neutron Star Interior Composition Explorer observations. During our observations, the source happens to be in the banana state (soft state) of the hardness–intensity diagram. In addition to a power law with a high-energy cut-off, the spectrum is found to exhibit broad iron Kα emission along with distinct absorption features. A prominent absorption feature observed at 6.92 keV may be interpreted as Kα absorption line from hydrogen-like iron. The absorption feature observed at 7.98 keV may be interpreted as a blend of Fe xxv and Ni xxvii transitions. We have summarized the evidence of variability of the spectral features observed in the X-ray continuum by time-resolved spectroscopy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
