Abstract Details

Name: Arghajit Jana
Affiliation: Indian Centre for Space Physics
Conference ID: ASI2017_455
Title : Propeties of Acctretion Flow around BHC Swift J1753.5-0127
Authors and Co-Authors : Arghajit Jana(1), Dipak Debnath(1), Sandip k Chakrabarti(1,2), Santanu Mondal(1,3), Debjit Chatterjee(1), Aslam Ali Molla(1) 1.Indian Centre for Space Physics, Kolkata, India 2. SN Bose National Centre for Basic Science, Kolkata, India 3.Instituto de Fisica Y Astronomia Facultad de Ciencias, Universidad de Valparaiso, Valparaso, Chile
Abstract Type : Poster
Abstract Category : Stars,ISM and the Galaxy
Abstract : Galactic stellar massive black hole candidate (BHC) Swift J1753.5-0127 was discovered on June, 2005 by Swift/BAT. We analized 2.5-25 keV RXTE/PCA data of the BHC during its 2005 outburst with two component advective flow (TCAF) model as a local additive table model in XSPEC. From the spectral study, we extracted physical accretion flow parameters, such as Keplerian disk rate, sub-Keplerian halo rate, shock location and shock strength, etc. We also find mass of the BHC from our study is in the range of 4.7-5.9 solar mass. During the entire outburst, quasi periodic oscillations (QPOs) in power density spectra are observed in most of the observation in a sporadic way. From accretion rate ratio (ARR=halo rate/disk rate), QPO evolution and powe-law photon index, we classified entire 2005 outburst into two harder spectral states, such as, hard and hard-intermediate. No sign of soft spectral state is found. We also estimated the X-ray contribution from jets during the outbusrt with TCAF solution. The contribution is upto ~12.5 % of total X-ray. It is needed to mention that after the initial high X-ray flaring/outbursting signature in 2005 of roughly three months, until now the source was not went into a dormant phase and showing low X-ray activity. The reason may be that the source belongs to a short orbital period binary and companion is a mass losing star.