"Astrophysics - High Energy Astrophysical Phenomena"

Searches for Continuous-Wave Gravitational Radiation

Now that detection of gravitational wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational wave signatures. Here we examine the prospects …

Astrophysics with the Laser Interferometer Space Antenna

Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy as it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The synergy with ground-based …

The First 5 Years of Gravitational-Wave Astrophysics

General relativity predicts that moving massive objects generate gravitational waves, ripples in spacetime that propagate at the speed of light. Direct detection of gravitational waves was first announced in February of 2016. Vitale reviews the …

Testing General Relativity with Gravitational Waves

Gravitational-wave sources offer us unique testbeds for probing strong-field, dynamical, and nonlinear aspects of gravity. In this chapter, we give a brief overview of the current status and future prospects of testing general relativity with …

Testing the Black Hole `No-Hair' Hypothesis

Black holes (BHs) in general relativity (GR) are very simple objects. This property, that goes under the name of `no-hair', has been refined in the last few decades and admits several versions. The simplicity of BHs makes them ideal testbeds of …