New MAXI Transient Black Hole Candidate: Properties of MAXI J1348-630 during its 2019 Outburst

MAXI J1348-630 was discovered on 2019 January 26 by MAXI/GSC. We studied this newly discovered Galactic transient black hole candidate (BHC) using Swift/XRT, Swift/BAT and MAXI/GSC data in a broad energy range of 1-150 keV. We studied both the timing and the spectral properties of the source during its 2019 outburst. Spectral analysis is made with the physical two component advective flow (TCAF) model based fits file in XSPEC. We extracted physical flow parameters such as Keplerian disk rate, sub-Keplerian halo rate, shock location and shock compression ratio directly from our spectral analysis. We find the source gone through all canonical spectral states of a classical BHC, such as hard (HS), hard-intermediate (HIMS), soft-intermediate (SIMS) and soft (SS) during the outburst. Quasi Periodic Oscillation (QPO) is observed only in two observations. From the spectral analysis, we also estimated the probable mass of the black holes 9+/-1 Solar mass.