Fundamental errors exist in the above-mentioned article, which attempts to justify previous erroneous claims concerning signature change. In the simplest example, the authors’ proposed “solutions” do not satisfy the relevant equation, as may be checked by substitution. These “solutions” are also different to the authors’ originally proposed “solutions”, which also do not satisfy the equation. T...

The Hayward fault in California's San Francisco Bay area produces large earthquakes, with the last occurring 1868. We examine how physics-based dynamic rupture modeling can be used to numerically simulate earthquakes on not only fault, but also its connected companions north and south, Rodgers Creek Calaveras faults. Equipped a wealth of images this system, including those 3D geology geometry, ...

In this article, we explore the geodesics motion of neutral test particles and process energy extraction from a regular rotating Hayward black hole. We analyse effect spin, as well deviation parameter $g$, on ergoregion, event horizon static limit said By making use geodesic equations equatorial plane, determine innermost stable circular photon orbits. Moreover, investigate effective potentials...