Abstract Details
| Name: Indrani Banerjee Affiliation: S. N. Bose National Centre for Basic Sciences Conference ID: ASI2017_1142 Title : Analysis of spectral characteristics of the persistent source Cygnus X-1 using the TCAF Solution Authors and Co-Authors : Indrani Banerjee^1,*,Ayan Bhattacharjee^1 , Anuvab Banerjee^1,, Dipak Debnath^2, Sandip K. Chakrabarti^{1,2} 1. S.N. Bose National Centre for Basic Sciences, JD Block, Salt Lake, Kolkata 700106 2. Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata 700084 * Presenting author Abstract Type : Poster Abstract Category : Stars,ISM and the Galaxy Abstract : We investigate spectral behaviour of the persistent black hole source Cygnus X-1 from December 10, 1997 to June 27, 1998. We use RXTE/PCA data and apply the Two-Component Advective Flow (TCAF) solution for studying its spectral properties. This gives us an idea of the underlying accretion flow dynamics around the object in terms of the disk and halo rates and the location and size of the Compton cloud. This is the first time such details of the flow is reported. Moreover, in the TCAF model the mass of the black hole is also a spectral fit parameter and hence purely from the spectral fits we can obtain a constraint on the mass of the black hole. The mass of the black hole candidate is estimated to be M_avg = 14.430 ± 0.494 M_sun . This is consistent with previous estimates by others. |