Spectral Signature of Mass Outflow in the Two Component Advective Flow Paradigm

2021 ◽  
Vol 920 (1) ◽  
pp. 41
Author(s):  
Santanu Mondal ◽  
Sandip K. Chakrabarti
2008 ◽  
Author(s):  
Himadri Ghosh ◽  
S. K. Chakrabarti ◽  
Philippe Laurent ◽  
Sandip K. Chakrabarti ◽  
Archan S. Majumdar

2020 ◽  
Vol 493 (2) ◽  
pp. 2452-2462 ◽  
Author(s):  
Kaushik Chatterjee ◽  
Dipak Debnath ◽  
Debjit Chatterjee ◽  
Arghajit Jana ◽  
Sandip K Chakrabarti

ABSTRACT Spectral and timing properties of the stellar-mass black hole candidate XTE J1752-223 during its 2009-10 outburst are studied using RXTE PCA data in the 2.5–25 keV energy range. Low frequency quasi-periodic oscillations are seen during outburst. The spectral analysis is done using two types of models: one is the combined disc blackbody plus power-law model and the other is Transonic flow solution based Two Component Advective Flow (TCAF) model. Light-curve profiles and evolution of hardness ratios are studied using MAXI GSC and Swift BAT data. Based on the evolution of the temporal and the spectral properties, we find that the object evolved through the following spectral states: hard, hard-intermediate, and soft-intermediate/soft. From the TCAF model fitted spectral analysis, we also estimate the probable mass of the black hole in the range of 8.1−11.9 M⊙, and more precisely, the mass appears to be 10 ± 1.9 M⊙.


2014 ◽  
Vol 440 (1) ◽  
pp. L121-L125 ◽  
Author(s):  
Dipak Debnath ◽  
Sandip K. Chakrabarti ◽  
Santanu Mondal

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