Implementation of two-component advective flow solution in xspec

D Debnath, SK Chakrabarti… - Monthly Notices of the …, 2014‏ - academic.oup.com
Spectral and temporal properties of black hole candidates can be explained reasonably well
using Chakrabarti–Titarchuk solution of two-component advective flow (TCAF). This model …

Estimation of mass of compact object in H 1743-322 from 2010 and 2011 outbursts using TCAF solution and spectral index–QPO frequency correlation

AA Molla, SK Chakrabarti, D Debnath… - The Astrophysical …, 2017‏ - iopscience.iop.org
The well-known black hole candidate (BHC) H 1743-322 exhibited temporal and spectral
variabilities during several outbursts. The variation of the accretion rates and flow geometry …

Accretion flow dynamics of MAXI J1836-194 during its 2011 outburst from TCAF solution

A Jana, D Debnath, SK Chakrabarti… - The Astrophysical …, 2016‏ - iopscience.iop.org
The Galactic transient X-ray binary MAXI J1836-194 was discovered on 2011 August 29.
Here we make a detailed study of the spectral and timing properties of its 2011 outburst …

Inference on accretion flow dynamics using TCAF solution from the analysis of spectral evolution of H 1743-322 during the 2010 outburst

S Mondal, D Debnath… - The Astrophysical …, 2014‏ - iopscience.iop.org
We study accretion flow dynamics of the Galactic transient black hole candidate (BHC) H
1743-322 during its 2010 outburst by analyzing spectral data using the two-component …

Estimation of the mass of the black hole candidate MAXI J1659− 152 using TCAF and POS models

AA Molla, D Debnath, SK Chakrabarti… - Monthly Notices of …, 2016‏ - academic.oup.com
The Galactic transient black hole candidate (BHC) MAXI J1659− 152 exhibited temporal and
spectral evolution during its very first X-ray outburst (2010) after its discovery on 2010 …

Characterization of GX 339-4 outburst of 2010–11: analysis by xspec using two component advective flow model

D Debnath, S Mondal… - Monthly Notices of the …, 2015‏ - academic.oup.com
We study spectral properties of GX 339-4 during its 2010–11 outburst with two component
advective flow (TCAF) model after its inclusion in xspec as a table model. We compare …

Accretion Flow Evolution of a New Black Hole Candidate MAXI J1348–630 during the 2019 Outburst

A Jana, D Debnath, D Chatterjee… - The Astrophysical …, 2020‏ - iopscience.iop.org
Galactic black hole (BH) candidate MAXI J1348–630 was recently discovered by MAXI and
Swift/BAT satellites during its first outburst in 2019 January, which continued for∼ 4 months …

Accretion flow properties of MAXI J1543–564 during 2011 outburst from the TCAF solution

D Chatterjee, D Debnath, SK Chakrabarti… - The Astrophysical …, 2016‏ - iopscience.iop.org
We derive accretion flow properties of the transient black hole candidate (BHC) MAXI J1543–
564 using the RXTE data. We use the two-component advective flow (TCAF) solution to fit …

Accretion flow dynamics of MAXI J1659-152 from the spectral evolution study of its 2010 outburst using the TCAF solution

D Debnath, AA Molla, SK Chakrabarti… - The Astrophysical …, 2015‏ - iopscience.iop.org
Transient black hole candidates are interesting objects to study in X-rays as these sources
show rapid evolutions in their spectral and temporal properties. In this paper, we study the …

Smoothed particle hydrodynamic simulations of viscous accretion discs around black holes

G Lanzafame, D Molteni… - Monthly Notices of the …, 1998‏ - academic.oup.com
Viscous Keplerian discs become sub-Keplerian close to a black hole since they pass
through sonic points before entering into it. We study the time evolution of polytropic viscous …