59 citations · 675 across the 50 of their papers we have counts for
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ISCO, Lyapunov exponent and Kolmogorov-Sinai entropy for Kerr-Newman Black hole
Partha Pratim Pradhan
We compute the principal Lyapunov exponent and Kolmogorov-Sinai(KS) entropy for Kerr-Newman black hole space-times and investigate the stability and instability of the equatorial c…
ISCO and Principal Null Congruences in Extremal Kerr Spacetime
Partha Pratim Pradhan
The effective potential in universal like coordinates, which are smooth across the event horizon is derived and investigated the ISCO(Innermost Stable Circular Orbits…
Horizon Straddling ISCOs in Spherically Symmetric String Black Holes
Parthapratim Pradhan
The causal geodesics in the equatorial plane of a static extremal charged black holes in heterotic string theory are examined with regard to their geodesic stability, and compared…
Lense-Thirring Precession in Plebański-Demiański spacetimes
Chandrachur Chakraborty, Partha Pratim Pradhan
An exact expression of Lense-Thirring precession rate is derived for non-extremal and extremal Plebański-Demiański spacetimes. This formula is used to find the exact Lense-Thirring…
Stability analysis and quasinormal modes of Reissner Nordstrøm Space-time via Lyapunov exponent
Parthapratim Pradhan
We explicitly derive the proper time principal Lyapunov exponent () and coordinate time () principal Lyapunov exponent () for Reissner Nordstrøm (RN) black h…