Decoding the X-Ray Flare from MAXI J0709–159 Using Optical Spectroscopy and Multiepoch Photometry

We present a follow-up study on the recent detection of two X-ray flaring events by MAXI/GSC observations in soft and hard X-rays from MAXI J0709-159 direction HD 54786 (LY CMa), 2022 January 25. The luminosity during flare was around 10^(37) erg/s (MAXI), which got reduced to 10^(32) (NuSTAR) after flare. took low-resolution spectra HCT VBT facilities India, February 1 2. In addition H-alpha emission, we found emission lines He I optical spectrum this star. By comparing our object with those literature that show variability. Using photometric estimate star is having effective temperature 20000 K. Although reported as supergiant previous studies, analysis favours it be evolving off main sequence Color-Magnitude Diagram. could not detect any infrared excess, ruling out possibility IR dusty circumstellar disc. Our suggests Be/X-ray binary system compact companion, possibly neutron