One century after its formulation, Einstein's general relativity (GR) has made remarkable
predictions and turned out to be compatible with all experimental tests. Most of these tests …

The observation of the inspiral and merger of compact binaries by the LIGO/Virgo
collaboration ushered in a new era in the study of strong-field gravity. We review current and …

Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

This review is focused on tests of Einstein's theory of general relativity with gravitational
waves that are detectable by ground-based interferometers and pulsar-timing experiments …

Chern–Simons modified gravity is an effective extension of general relativity that captures
leading-order, gravitational parity violation. Such an effective theory is motivated by anomaly …

We consider the concept of fundamental bias in gravitational wave astrophysics as the
assumption that general relativity is the correct theory of gravity during the entire wave …

We review the tests of general relativity that will become possible with space-based
gravitational-wave detectors operating in the∼ 10− 5− 1 Hz low-frequency band. The …

We derive a stationary and axisymmetric black hole solution to quadratic order in the spin
angular momentum. The previously found, linear-in-spin terms modify the odd-parity sector …

The low-energy limit of string theory contains an anomaly-canceling correction to the
Einstein-Hilbert action, which defines an effective theory: Chern-Simons (CS) modified …

The Chern-Simons modification to general relativity in four dimensions consists of adding to
the Einstein-Hilbert term a scalar field that couples to the first-class Pontryagin density. In …