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MAXI J1957+032 is a transient Low-mass X-ray binary (LMXB) that underwentfour short outbursts in 1.5 years since its discovery in 2015. The nature ofthe compact object in MAXI J1957+032 is not clear, but it was proposed to be aneutron star based on the short-duration of its outbursts. Here, we report theresults obtained after performing spectral analysis using data obtained withthe X-ray telescope aboard the Neil Gehrels Swift satellite. When describingthe spectrum with an absorbed power law, we found that the spectra softens (thepower-law index increases from $\sim$ 1.8 to 2.5) as the luminosity decreases.Near the end of its outbursts the observed value of power-law index ($\Gamma$)is $\sim$ 2.5. To identify the nature of the compact object in this system, weused $\Gamma$ as a tracer of the spectral evolution with luminosity. We foundthat for the distance of 4 kpc, our results suggest that the source harbours aneutron star.

Unveiling the nature of compact object in the LMXB MAXI J1957+032 using Swift-XRT