100 citations · 181 across the 4 of their papers we have counts for
7 papers
Photon spheres, ISCOs, and OSCOs: Astrophysical observables for regular black holes with asymptotically Minkowski cores
Thomas Berry, Alex Simpson, Matt Visser
Classical black holes contain a singularity at their core. This has prompted various researchers to propose a multitude of modified spacetimes that mimic the physically observable…
Thin-shell traversable wormhole crafted from a regular black hole with asymptotically Minkowski core
Thomas Berry, Francisco S. N. Lobo, Alex Simpson +1
Recently, a novel model for a regular black hole was advocated which possesses an asymptotically Minkowski core implemented via an exponential suppression (in the core region) of t…
Dynamic thin-shell black-bounce traversable wormholes
Francisco S. N. Lobo, Alex Simpson, Matt Visser
Based on the recently introduced black-bounce spacetimes, we shall consider the construction of the related spherically symmetric thin-shell traversable wormholes within the contex…
Decomposition of total stress-energy for the generalised Kiselev black hole
Petarpa Boonserm, Tritos Ngampitipan, Alex Simpson +1
We demonstrate that the anisotropic stress-energy supporting the Kiselev black hole can be mimicked by being split into a perfect fluid component plus either an electromagnetic com…
ISCOs and OSCOs in the presence of positive cosmological constant
Petarpa Boonserm, Tritos Ngampitipan, Alex Simpson +1
Normally one thinks of the observed cosmological constant as being so small that it can be utterly neglected on typical astrophysical scales, only affecting extremely large-scale c…
Vaidya spacetimes, black-bounces, and traversable wormholes
Alex Simpson, Prado Martin-Moruno, Matt Visser
We consider a non-static evolving version of the regular "black-bounce"/traversable wormhole geometry recently introduced in JCAP02(2019)042 [arXiv:1812.07114 [gr-qc]]. We first re…