2023 Departmental Poster Competition

XTE J1946+274 is a Be/X-ray binary (BeXRB) that was first discovered in September 1998, when 15.8s pulsations were detected using RXTE All-Sky Monitor and BATSE. This High Mass X-Ray Binary underwent a Type II outburst in June 2018 and was observed by the Chinese satellite Insight-HXMT at a flux of ~4.27 × 10-9 erg cm-2 s-1 in the range of 1 to 80 keV. The source was observed for a duration of 150 ks. This source was observed to have a spin period of 15.756 seconds. The pulse profile shows strong energy dependence with a double-peaked structure at low energies while evolving into a single-peaked structure at higher energies. The spectral continuum is described using a model consisting of a double component power-law and a black body component. We find the presence of a broad absorption-like feature at 48.3 keV and are probing to see if this is a cyclotron resonance scattering feature. 

We use the Insight-HXMT Data Analysis software hxmtsoftv2.05, CALDB 2.06, and heasoft-6.30 to analyze the observations and extract scientific products.