Abstract Sensor technology is developing rapidly and up to date. The lifetime of the Wireless Network (WSN) has also attracted many researchers, location Base Station (BS) plays a crucial role in prolonging lifetime. energy consumption WSN occurs during transmission data selection cluster-head nodes. A reasonable BS prolongs WSN. This study proposes Levy Flight Edge Regeneration Black Hole algo...

Nature-inspired algorithms are recently being appreciated for solving complex optimization and engineering problems. Black hole algorithm is one of the recent nature-inspired algorithms that have obtained inspiration from black hole theory of universe. In this paper, four formulations of multi-objective black hole algorithm have been developed by using combination of weighted objectives, use of...

Numerical relativity codes now being developed will evolve initial data representing colliding black holes at a relatively late stage in the collision. The choice of initial data used for code development has been made on the basis of mathematical definitiveness and usefulness for computational implementation. By using the “particle limit” (the limit of an extreme ratio of masses of colliding h...

We study the quantum gravitational effects in spherically symmetric black hole spacetimes. The effective quantum spacetime felt by a point-like test mass is constructed by “renormalization group improving” the Schwarzschild metric. The key ingredient is the running Newton constant which is obtained from the exact evolution equation for the effective average action. The conformal structure of th...

The approximate solution of the Klein-Gordon equation for a real scalar field mass $\mu$ in geometry Kerr black hole obtained by Detweiler \cite{Detweiler:1980uk} is widely used analysis stability holes as well search axion-like particles. In this work, we confirm missing factor $1/2$ solution, which was first identified Ref.~\cite{Pani:2012bp}. corrected result has strange features that put qu...

In a network environment supporting mobile entities (called robots or agents), a black hole is a harmful site that destroys any incoming entity without leaving any visible trace. The black-hole search problem is the task of a team of k > 1 mobile entities, starting from the same safe location and executing the same algorithm, to determine within finite time the location of the black hole. In th...