Dark matter may alter the dynamics of colliding black holes and leave a signature in their gravitational-wave emission.

Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of atomic nuclei, and they possess some of the strongest gravitational fields of ...

A study published in Nature has established a new benchmark in modeling the universe's most extreme events: the collisions of black holes and neutron stars. This research, led by Professor Jan Plefka ...

Could it be that the universe’s first structures were born not from enigmatic inflaton fields, but from the echoes of ancient gravitational waves? In a shocking shift from the conventional picture of ...

Every few hours, without warning, certain galactic centers light up in soft X-rays and then go dark again — a rhythmic pulse from deep inside a distant galaxy with no obvious trigger. Since the first ...

Transformation optics in gravitational fields explores the design of engineered media that emulate the curvature of spacetime to manipulate electromagnetic waves. By mapping desired geometrical ...

Scientists have detected the most massive merger of black holes ever. This titanic collision, "heard" in ripples in spacetime called gravitational waves, involves black holes so massive that it could ...

Theories of the early Universe propose a phase of accelerated expansion known as inflation, frequently driven by a pseudoscalar inflaton field termed the axion. In axion inflationary models, a ...