8 citations · 9 across the 6 of their papers we have counts for
5 papers · 1 filter
Photon rings in a holographic toy model
Stéphane Detournay, Sahaja Kanuri, Alexandru Lupsasca +3
Light circling around an astrophysical black hole can spend a long time skirting its unstably bound photon orbits before escaping to infinity. To a distant observer, this orbiting…
Boundary Conditions for Extremal Black Holes from 2d Gravity
Stéphane Detournay, Thomas Smoes, Raphaela Wutte
We devise new boundary conditions for the near-horizon geometries of extremal BTZ and Kerr black holes, as well as for the ultra-cold limit of the Kerr-de Sitter black hole. These…
Warped Flatland
Stéphane Detournay, Wout Merbis, Gim Seng Ng +1
We study warped flat geometries in three-dimensional topologically massive gravity. They are quotients of global warped flat spacetime, whose isometries are given by the 2-dimensio…
Interpolating Between Asymptotic and Near Horizon Symmetries
D. Grumiller, M. M. Sheikh-Jabbari, C. Troessaert +1
We develop basic tools and matching conditions to interpolate between asymptotic and near horizon symmetries. We focus on black holes in three dimensions. In particular, we match B…
New entropy formula for Kerr black holes
Hernan Gonzalez, Daniel Grumiller, Wout Merbis +1
We introduce a new entropy formula for Kerr black holes inspired by recent results for 3-dimensional black holes and cosmologies with soft Heisenberg hair. We show that also Kerr-T…