http://arxiv.org/abs/1901.02245
The nature of lag variation of Galactic black holes remains enigmatic mostly because of nonlinear and non-local physical mechanisms which contribute to the lag of the photons coming from the region close to the central black holes. One of the widely accepted major sources of the hard lag is the inverse Comptonization mechanism. However, exact reason or reasons for soft lags is yet to be identified. In this paper, we discover a tight correlation between radio intensities of several outbursting Galactic black hole candidates and amounts of soft lag. The correlation strongly suggests that the presence of major outflows or jets also change the disk morphology along the line of sight of the observer which produces soft lags. We discuss possible nature of such changes using results of numerical simulations around black holes published in the literature.
D. Patra, A. Chatterjee, B. Dutta, et. al.
Wed, 9 Jan 19
8/46
Comments: The article contains 5 pages and 2 figures. Submitted to MNRAS Letters. Comments are welcome