# GRG Editor's Choice

In each volume of the journal *General Relativity and Gravitation*, a few articles are marked as “Editor’s Choice”. The primary criteria is original, high quality research that is of wide interest within the community.

## 2018

Classical Mechanics via General Relativity and Maxwell's Theory: A Bit of Magic

Ezra T. Newman

Difficulties of quantitative tests of the Kerr-hypothesis with X-ray observations of mass accreting black holes

Henric Krawczynski

Primordial power spectrum from the Dapor–Liegener model of loop quantum cosmology

Ivan Agullo

The collisional Penrose process

Jeremy D. Schnittman

Semiclassical approximation of the Wheeler–DeWitt equation: arbitrary orders and the question of unitarity

Claus Kiefer, David Wichmann

Light deflection and Gauss–Bonnet theorem: definition of total deflection angle and its applications

Hideyoshi Arakida

Extreme gravity tests with gravitational waves from compact binary coalescences: (I) inspiral–merger

Emanuele Berti, Kent Yagi, Nicolás Yunes

2-vertex Lorentzian spin foam amplitudes for dipole transitions

Giorgio Sarno, Simone Speziale, Gabriele V. Stagno

Shadows and strong gravitational lensing: a brief review

Pedro V. P. Cunha, Carlos A. R. Herdeiro

Cartan invariants and event horizon detection

D. Brooks, P. C. Chavy-Waddy, A. A. Coley, A. Forget, D. Gregoris, M. A. H. MacCallum, D. D. McNutt

## 2017

Higher curvature gravities, unlike GR, cannot be bootstrapped from their (usual) linearizations

S. Deser

Almost rigidity of the positive mass theorem for asymptotically hyperbolic manifolds with spherical symmetry

Anna Sakovich, Christina Sormani

Collisional super-Penrose process and Wald inequalities

Igor V. Tanatarov, Oleg B. Zaslavskii

Cosmological solutions with charged black holes

Rashida Bibi, Timothy Clifton, Jessie Durk

Quasi-local gravitational angular momentum and centre of mass from generalised Witten equations

Wolfgang Wieland

The magnetic part of the Weyl tensor, and the expansion of discrete universes

Timothy Clifton, Daniele Gregoris, Kjell Rosquist

## 2016

Algebraically special Einstein–Maxwell fields

Norbert Van den Bergh

A toy Penrose inequality and its proof

Ingemar Bengtsson, Emma Jakobsson

Massive to gauge field reduction and gravitational wave zone information

S. Deser

Implications of the gravitational wave event GW150914

M. Coleman Miller

A note on entanglement entropy, coherent states and gravity

Madhavan Varadarajan

Ultrarelativistic boost with scalar field

O. Svítek, T. Tahamtan

Angular diameter distances reconsidered in the Newman and Penrose formalism

Thomas P. Kling, Aly Aly

## 2015

Quasi-normal acoustic oscillations in the transonic Bondi flow

Eliana Chaverra, Olivier Sarbach

Momentum density of spacetime and the gravitational dynamics

T. Padmanabhan

Bel–Robinson as stress-tensor gradients and their extensions to massive matter

S. Deser, J. Franklin

Geodesic deviation at higher orders via covariant bitensors

Justin Vines

Von Zeipel’s theorem for a magnetized circular flow around a compact object

O. Zanotti, D. Pugliese

Creating images by adding masses to gravitational point lenses

Olivier Sète, Robert Luce, Jörg Liesen

On the effective metric of a Planck star

Tommaso De Lorenzo, Costantino Pacilio, Carlo Rovelli, Simone Speziale

2014

Fundamental cosmology in the E-ELT era: the status and future role of tests of fundamental coupling stability

C. J. A. P. Martins

Hamiltonian and Noether charges in first order gravity

Alejandro Corichi, Iraís Rubalcava-García, Tatjana Vukašinac

Relativistic elasticity of rigid rods and strings

José Natário

Parameterization of temperature and spectral distortions in future CMB experiments

Cyril Pitrou, Albert Stebbins

Reconstructing the velocity field beyond the local universe

R. Johnston, D. Bacon, L. F. A. Teodoro, R. C. Nichol, M. S. Warren, C. Cress

Last gasp of a black hole: unitary evaporation implies non-monotonic mass loss

Eugenio Bianchi, Matteo Smerlak

On the shape of bodies in general relativistic regimes

Martin Reiris

Sharp parameter bounds for certain maximal point lenses

Robert Luce, Olivier Sète, Jörg Liesen

General relativity from a thermodynamic perspective

T. Padmanabhan

## 2013

Canonical structure of tetrad bimetric gravity

Sergei Alexandrov

Asymptotic analysis of perturbed dust cosmologies to second order

Claes Uggla, John Wainwright

A set of invariant quality factors measuring the deviation from the Kerr metric

Alfonso García-Parrado Gómez-Lobo, José M. M. Senovilla

Linear bosonic and fermionic quantum gauge theories on curved spacetimes

Thomas-Paul Hack, Alexander Schenkel

Scale anomaly as the origin of time

Julian Barbour, Matteo Lostaglio, Flavio Mercati

Spike statistics

J. Mark Heinzle, Claes Uggla

## 2012

Shape dynamics in 2+1 dimensions

Timothy Budd, Tim Koslowski

Do primordial lithium abundances imply there’s no dark energy?

Marco Regis, Chris Clarkson