The next two decades are expected to open the door to the first coincident detections of
electromagnetic (EM) and gravitational-wave (GW) signatures associated with massive …

Massive binary black holes (10 5 M⊙–10 9 M⊙) form at the centre of galaxies that
experience a merger episode. They are expected to coalesce into a larger black hole …

The gravitational wave observations GW150914 and GW151226 by Advanced LIGO provide
the first opportunity to learn about physics in the extreme gravity environment of coalescing …

We propose a space-based interferometer surveying the gravitational wave (GW) sky in the
milli-Hz to μ-Hz frequency range. By the 2040s, the μ-Hz frequency band, bracketed in …

Accretion disks around supermassive black holes (SMBHs) are promising sites for stellar
mass black hole (BH) mergers due to mass segregation and merger acceleration by disk …

We present the results of 2D, moving-mesh, viscous hydrodynamical simulations of an
accretion disc around a merging supermassive black hole binary (SMBHB). The simulation …

We compare GW150914 directly to simulations of coalescing binary black holes in full
general relativity, including several performed specifically to reproduce this event. Our …

Understanding the predictions of general relativity for the dynamical interactions of two black
holes has been a long-standing unsolved problem in theoretical physics. Black-hole …

ABSTRACT The upcoming Laser Interferometer Space Antenna (LISA) is expected to detect
gravitational waves (GWs) from massive black hole binaries (MBHB). Finding the …

We have simulated the magnetohydrodynamic evolution of a circumbinary disk surrounding
an equal-mass binary comprising two non-spinning black holes during the period in which …