Disk-Jet coupling of black hole sources with the TCAF solution
Abstract
Jets/outflows are important feature in black holes. The ejection mechanism depends on the accretion flow and spectral states. Compact jets are generally observed in low/hard states. Blobby jets or discrete ejection generally observed in the intermediate states. Jets are quenched in the soft states. Jets are observed in multiwave bands, form radio to high energy X-rays and gamma-rays. In case of compact jet, radio and X-ray fluxes are correlated. However, for blobby jets, the correlation is not trivial. We have developed a new method to calculate jet X-ray flux from spectral analysis with two component advective flow (TCAF) model fits file in XSPEC. We use the fact that normalization must remain constant throughout the outburst since it is a function of intrinsic source parameters such as, mass, distance and inclination angle of the system. If jet is present, constancy of the model normalization breaks, and higher values of normalization may require to fit the spectra. This allowed us to assume on the minimum normalization day, jet contribution is also minimum. On the basis of this assumption, we developed a new method to separate X-ray contribution from inflowing / accretion disk matter and from jets / outflowing matter. Using this newly developed method, we have calculated X-ray contributions of jets/outflow for Swift J1753.5-0127 during its 2005 outburst and MAXI J1836-194 during its 2011 outburst. We find jet contributes in the X-ray is upto 44% and 86% for Swift J1753.5-0127 and MAXI J1836-194 respectively. We also find correlation between radio (F_{R}) and jet (F_{out}) X-ray fluxes, as F_{R} ∼ F_{out}^{0.6}, which is similar to the standard correlation. From the correlation plot, we conclude that in the intermediate state Swift J1753.5-0127 showed blobby jet while MAXI J1836-194 showed compact jet throughout the outburst. Chakrabarti, S.K., & Titarchuk, L.G., 1995, ApJ, 455, 623Debnath, D., Chakrabarti, S.K., & Mondal, S., 2014, MNRAS, 440, L121Jana, A., Chakrabarti, S. K., & Debnath, D., 2017, ApJ, 850, 91Jana, A., Debnath, D., Chakrabarti, S. K., & Chatterjee, D., 2018, ApJ (submitted)
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E1595J