Spectral and timing properties of MAXI J1836-194 during its 2011 outburst and estimation of mass with TCAF solution
Abstract
We make a detailed analysis of the BHC using 2.5-25 keV RXTE/PCA data with two components advective flow (TCAF) model generated fits file as an additive table model in XSPEC. From the spectral analysis, we extract Keplerian disk rate, sub-Keplerian halo rate, shock location and compression ratio. We also estimate mass of the BHC from spectral analysis and we find it in the range of 7.5-11 M_{Sun}. During the entire outburst we keep the normalization in a very narrow range of 0.25-0.35 except a few days when radio jet is observed. We find quasi periodic oscillation (QPO) frequencies are in sporadic nature. From the variation of accretion rate ratio (ARR=halo rate/disk rate), QPO frequencies and photon indices, we classify the outburst in two states - hard and hard-intermediate. Unlike other BHC, soft and soft-intermediate states are absent during the entire outburst. This may be the reason due to the fact that the BHC is immersed within the excreation disk of the companion which is a Be star.
- Publication:
-
41st COSPAR Scientific Assembly
- Pub Date:
- July 2016
- Bibcode:
- 2016cosp...41E.891J