Accretion Flow Evolution of a New Black Hole Candidate MAXI J1348-630 During the 2019 Outburst

Abstract

Galactic black hole candidate MAXI~J1348-630 was recently discovered by {\it MAXI} and {\it Swift}/BAT satellites during its first outburst in 2019 January which continued for $\sim 4$ months. We study the spectral and timing properties of the source in detail. The combined $1-150$ keV {\it Swift}/XRT, {\it Swift}/BAT and {\it MAXI}/GSC spectra are investigated with the two component advective flow (TCAF) solution. Physical flow parameters of TCAF, such as the Keplerian disk accretion rate, the sub-Keplerian halo accretion rate, the shock location and the shock compression ratio are estimated from our spectral fits. Based on the variation of flux in soft and hard X-ray ranges, the hardness ratio, TCAF model fitted accretion rates and accretion rate ratio (ARR), we show how the sources evolved through four spectral states viz. hard, hard-intermediate, soft-intermediate and soft states in rising and declining states. Low-frequency quasi-periodic oscillations (QPO) are observed in two observations during the rising phase of the outburst. From the spectral analysis, we estimate the mass of the black hole to be $9.1_{-1.2}^{+1.6}$ $M_{\odot }$. We also find that the viscous timescale in this outburst is $\sim 3.5$ days. The distance of the source is also estimated as $5-10$ kpc from state transition luminosity.

15 Pages, 6 Figures, 2 Tables (Accepted for Publication in ApJ)

References in corpus (11)

• X-ray Properties of Black-Hole Binaries
• Evolution of the quasi-periodic oscillation frequency in GRO J1655-40 -- Implications for accretion disk dynamics
• AstroSat view of MAXI J1535-571: broadband spectro-temporal features
• Estimation of Mass of Compact Object in H 1743-322 from 2010 and 2011 Outbursts using TCAF Solution and Spectral Index - QPO Frequency Correlation
• The 2004 Outburst of BHC H1743-322: Analysis of spectral and timing properties using the TCAF Solution
• Properties of X-ray Flux of Jets During 2005 Outburst of Swift J1753.5-0127 Using TCAF Solution
• Delayed Outburst of H 1743--322 in 2003 and relation with its other outbursts
• Inference on Accretion Flow Properties of XTE J1752-223 During Its 2009-10 Outburst
• Possible range of viscosity parameter to trigger black hole candidates to exhibit different states of outbursts
• A new X-ray nova MAXI J1910-057 (= Swift J1910.2-0546) and mass-accretion inflow
• Spectral properties of NGC 4151 and the Estimation of black hole mass using TCAF solution

Cited by in corpus (2)

• A giant X-ray dust scattering ring around the black hole transient MAXI J1348-630 discovered with SRG/eROSITA
• Relation Between Quiescence and Outbursting Properties of GX 339-4