55 citations · 169 across the 8 of their papers we have counts for
8 papers
Understanding spectral states of sub-Keplerian accretion discs around compact objects as transitions between steady states
Arunima Ajay, S R Rajesh, Nishant K. Singh
We present here a simple hydrodynamic model based on a sequence of steady states of the inner sub-Keplerian accretion disc to model its spectral states. Correlations between differ…
Time variability of viscosity parameter in differentially rotating discs
S. R. Rajesh, Nishant K. Singh
We propose a mechanism to produce fluctuations in the viscosity parameter () in differetially rotating discs. We carried out a nonlinear analysis of a general accretion flow, wh…
Transition from radiatively inefficient to cooling dominated phase in two temperature accretion discs around black holes
Monika Sinha, S. R. Rajesh, Banibrata Mukhopadhyay
We investigate the transition of a radiatively inefficient phase of a viscous two temperature accreting flow to a cooling dominated phase and vice versa around black holes. Based o…
Two temperature accretion around rotating black holes: Description of general advective flow paradigm in presence of various cooling processes to explain low to high luminous sources
S. R. Rajesh, Banibrata Mukhopadhyay
We investigate the viscous two temperature accretion discs around rotating black holes. We describe the global solution of accretion flows with a sub-Keplerian angular momentum pro…
Two temperature viscous accretion flows around rotating black holes: Description of under-fed systems to ultra-luminous X-ray sources
S. R. Rajesh, Banibrata Mukhopadhyay
We discuss two temperature accretion disk flows around rotating black holes. As we know that to explain observed hard X-rays the choice of Keplerian angular momentum profile is not…
Incomplete approach to homoclinicity in a model with bent-slow manifold geometry
S. Rajesh, G. Ananthakrishna
The dynamics of a model, originally proposed for a type of instability in plastic flow, has been investigated in detail. The bifurcation portrait of the system in two physically re…
Relaxation oscillations and negative strain rate sensitivity in the Portevin - Le Chatelier effect
S. Rajesh, G. Ananthakrishna
A characteristic feature of the Portevin - Le Chatelier effect or the jerky flow is the stick-slip nature of stress-strain curves which is believed to result from the negative stra…
Effect of Landauer's blowtorch on the equilibration rate in a bistable potential
Mulugeta Bekele, S. Rajesh, G. Ananthakrishna +1
Kinetic aspect of Landauer's blowtorch effect is investigated for a model double-well potential with localized heating. Using the supersymmetric approach, we derive an approximate…