Estimation of mass of MAXI J1659-152 during its very first outburst with TCAF fits

TL;DR

This paper estimates the mass of the black hole MAXI J1659-152 during its first outburst using TCAF model fits, providing a mass range and most probable value based on two different methods.

Contribution

It introduces a dual-method approach for black hole mass estimation during outburst using TCAF model fitting.

Findings

Mass range estimated as 4.06-7.93 solar masses.

Most probable mass value at 6 ± 2 solar masses.

Consistent results from two different estimation methods.

Abstract

We determine mass of MAXI J1659-152 using two different methods, viz: constant Normalization parameter point of view while fitting with TCAF, $M_{BH}$-$\chi^2_{red}$ variation from TCAF fits. We find a mass range of $4.06-7.93~M_\odot$ with a most probable value at $6 \pm 2 M_\odot$.