We have just published evidence in Nature Astronomy for what might be producing mysterious bursts of radio waves coming from distant galaxies, known as fast radio bursts or FRBs. Two colliding neutron stars — each the super-dense core of an exploded star — produced a burst of gravitational waves when they merged into a “supramassive” ...
To answer what gravitational waves are, we must travel back in time to 1916. This was the year famous physicist Albert Einstein published his general theory of relativity. Einstein had figured out how to explain gravity within the Universe using maths. Gravity is the force that keeps us on Earth and Earth orbiting around the ...
For the first time, astronomers have encountered something exciting from archival data. The data from gravitational ripple observatories showed a merger of two black holes that came far away in space from each other. Interestingly, these two black holes born in different places found a way to merge. But how do they know these two ...
Quantum physical experiments exploring the motion of macroscopic or heavy bodies under gravitational forces require protection from any environmental noise and highly efficient sensing. An ideal system is a highly reflecting gravitational wave mirror whose motion is sensed by monochromatic light, which is photoelectrically detected with high quantum efficiency. A quantum optomechanical experiment is achieved ...
A team of international scientists, including researchers from The Australian National University (ANU), have unveiled the largest number of gravitational waves ever detected. The discoveries will help solve some of the most complex mysteries of the Universe, including the building blocks of matter and the workings of space and time. The global team’s study, published ...
There’s something a little off about our theory of the universe. Almost everything fits, but there’s a fly in the cosmic ointment, a particle of sand in the infinite sandwich. Some scientists think the culprit might be gravity — and that subtle ripples, gravitational waves, in the fabric of space-time could help us find the ...
Gravitational-wave researchers at the University of Birmingham have developed a new model that promises to yield fresh insights into the structure and composition of neutron stars. The model shows that vibrations, or oscillations, inside the stars can be directly measured from the gravitational-wave signal alone. This is because neutron stars will become deformed under the ...
In 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) made history when it detected gravitational waves for the first time, something that Albert Einstein had proposed almost a hundred years ago. Now, it is getting a significant upgrade that will improve the instrument’s sensitivity to gravitational waves. Funds for LIGO upgrade In total, the LIGO project will receive ...
Gravitational waves may hold the key to the universe’s expansion. Since it first exploded into existence 13.8 billion years ago, the universe has been expanding, dragging along with it hundreds of billions of galaxies and stars, much like raisins in a rapidly rising dough. Astronomers have pointed telescopes to certain stars and other cosmic sources ...
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